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Churchill tank

The Tank, Infantry, Mk IV (A22) Churchill was a British infantry tank used in the Second World War, best known for its heavy armour, large longitudinal chassis with all-around tracks with multiple bogies, its ability to climb steep slopes, and its use as the basis of many specialist vehicles. It was one of the heaviest Allied tanks of the war.

Tank, Infantry, Mk IV Churchill
A Churchill Mark IV tank
TypeInfantry tank
Place of originUnited Kingdom
Service history
In service1941–1952 (British Empire)[note 1]
Used bySee Operators
WarsSecond World War, Korean War
Production history
Designer
ManufacturerVauxhall Motors and others
Produced1941–1945
No. built5,640 approx.[1]
VariantsSee Variants
Specifications
Mass
  • 39.1 t (38.5 long tons) (Mark I)
  • 40.7 t (40.1 long tons) (Mark VII)
Length24 ft 5 in (7.44 m)
Width10 ft 8 in (3.25 m)
Height8 ft 2 in (2.49 m)
Crew5 (commander, gunner, loader/radio operator, driver, co-driver/hull gunner)

Armour
  • For Churchill I–VI: 102 mm hull front, 76 mm hull side, 51 mm hull rear, 89 mm turret front, 76 mm turret side and rear
  • Mark VII–VIII: 152 mm hull and turret front, 95 mm hull sides and turret sides and rear, 51 mm hull rear
Main
armament
Secondary
armament
EngineBedford 12-cylinder, 4 stroke, water-cooled, horizontally opposed, L-head petrol engine
350 hp (261 kW) at 2,200 rpm
Power/weight9.1 hp (6.7 kW) / tonne
TransmissionMerritt-Brown 4-speed constant-mesh epicyclic gearbox
SuspensionCoiled spring
Fuel capacity150 Imperial Gallons (682 liter) [2]
Operational
range
75–130 miles (120–210 km)[3]
Maximum speed 15 mph (24 km/h)
Steering
system
Triple differential steering in gearbox

The origins of the Churchill's design lay in the expectation that war in Europe might be fought in conditions similar to those of the First World War, and thus emphasised the ability to cross difficult ground. The Churchill was hurried into production in order to build up British defences against a possible German invasion. The first vehicles had flaws that had to be overcome before the Churchill was accepted for wide use. After several marks (versions) had been built, a better-armoured specification, the Mark VII, entered service with the British Army. The improved versions performed well in the later stages of the war.[4]

The Churchill was used by British and other Commonwealth forces during the North African, Italian and North-West Europe campaigns. In addition, 344 Churchills were sent as military aid to the Soviet Union during the Second World War and more than 250 saw active service on the Eastern Front.

Name Edit

The Churchill tank was named either after Prime Minister Winston Churchill,[dubious ][5] who had promoted the development of the tank in the First World War, or after John Churchill, 1st Duke of Marlborough. Churchill told Field Marshal Jan Smuts "That is the tank they named after me when they found out it was no damn good!"[6]

The name only incidentally matched what became the British Army practice of giving service names beginning with C to tanks. Cruiser tanks were given names, such as the contemporary Covenanter, Crusader, Cromwell, Cavalier and Comet but infantry tank naming had no particular pattern. Post-war, the merging of the cruiser and infantry tank lines in the 'universal' or main battle tanks continued with C names: Centurion, Conqueror, Chieftain, and Challenger.[citation needed]

History Edit

A20 Edit

Initially specified just before the outbreak of the Second World War, the A20 (its General Staff specification) was to supplement the Matilda II and Valentine infantry tanks. In accordance with British infantry tank doctrine and based on the expected needs of attacking a fixed defensive line, crossing wide trenches, possibly shell-cratered ground similar to First World War trench warfare[7] it was to be immune to the current German 3.7 cm Pak 36 anti-tank guns and carry an unditching beam.[7]

A general outline produced by Woolwich Arsenal was expanded by Belfast shipbuilders Harland & Wolff with advice from the Department of Tank Design.[8] The General Staff had proposed that it was armed with two QF 2 pounder guns, each located in a side sponson with a coaxial Besa machine gun. A third Besa and a smoke projector would be fitted in the front hull. To reduce weight the specification was revised to prefer a maximum armour to the front of 60 mm – sufficient to protect against ordinary shells from the German 37 mm gun.[8] Outline drawings were produced by Woolwich Arsenal based on the A12 Matilda turret – the Director of Mechanisation opposed a turretless design – and the engine and Wilson epicyclic transmission being developed for the A13 Mark III Covenanter tank.[8] Detail design and construction of the A20 was left to Harland & Wolff, who completed four prototypes by June 1940. During the construction period, the armament was reconsidered, including fitting either a 6-pounder gun or the French short 75 mm gun (as used on Char B1) in the forward hull – the former was considered too long[note 2] and the latter would require redesigning the front of the hull.[9] In the end, a 3-inch howitzer was chosen.[10][11] The A20 designs were short-lived, however, as at roughly the same time the defeated British Expeditionary Force was evacuated from Dunkirk. While intended for "positional warfare" and direct assaults against fortifications (it was referred to as "Shelled Area Tank", or by the French phrase Char de Fortresse) which had been rendered pointless by the fast pace of German armoured warfare a heavy tank that could defend the infantry from other tanks was still desired.[12]

At an initial 32 tons, with a 300 hp flat-12 Meadows DAV engine, the A20 had limited power compared to the 16-ton Covenanter.[8] This was a less serious limitation than it might appear, owing to the British distinction between the high-speed cruiser tanks and the slow-speed infantry tanks. Vauxhall, who were already involved as consultants on the suspension,[7] were approached to see if they could build the A20 and one example was sent to Vauxhall at Luton to see if they could provide an alternative engine developing 350 bhp. To this end, they developed a flat-12 petrol engine.[13] For speed of production, this engine was based on a Bedford Vehicles (Vauxhall's commercial vehicle operations) six-cylinder lorry engine, giving rise to its name of "Twin-Six".[14] Although using sidevalves to fit within the space, the engine was developed with high squish pistons, dual ignition and sodium-cooled exhaust valves in Stellite seats to give 350 bhp.[14]

A22 Edit

With France lost, the scenario of trench warfare in Northern Europe was no longer applicable and the design was revised by Dr H. E. Merritt,[note 3] Director of Tank Design at Woolwich Arsenal, based on the combat witnessed in Poland and France. These new specifications, for the A22 or Infantry Tank Mark IV, were given to Vauxhall in June 1940.[15]

With a German invasion of Britain looking imminent, and the loss of a substantial amount of military vehicles in the evacuation from France, the War Office specified that the A22 had to enter production within a year. By July 1940, the design was completed and by December of that year the first prototypes were completed; in June 1941, almost exactly a year as specified, the first Churchill tanks began rolling off the production line.

A leaflet from the manufacturer was added to the User Handbook, which also described known faults, with work-arounds and what was being done to correct the problem. It said:

Fighting vehicles are urgently required, and instructions have been received to proceed with the vehicle as it is rather than hold up production. All those things which we know are not as they should be will be put right.

Harold Drew of Vauxhall achieved miracles with the Churchill and its Merrit-Brown Tank Gearbox produced by David Brown Limited; "a brilliant design that went into production off the drawing board without adequate prototype testing and had the most disastrous teething troubles" according to Robotham,[citation needed] but British tanks were under-powered, under-gunned and unreliable. At the Tank Board level the Director of Artillery was still extolling the merits of the 2-pounder, and this gun was still fitted to every British tank until March 1942.[note 4] In a 1942 exercise, one tank had to have its gearbox changed five times.[16]

Because of its hasty development, there had been little testing and the Churchill was plagued with mechanical faults. Most apparent was that the Churchill's engine was underpowered, unreliable, and difficult to access for servicing. Another serious shortcoming was the tank's inadequate[citation needed] armament, the 2 pounder (40 mm) gun, which was improved by the addition of a 3-inch howitzer in the hull to deliver a HE shell, albeit not on a howitzer's usual high trajectory.[citation needed]

Production of a turret to carry the QF 6 pounder gun began in 1941, but lack of supplies of the plate used in an all-welded design led to an alternative cast turret also being produced. These formed the distinction between Mark III and Mark IV.[17]

In August 1942, the Churchill was used offensively for the first time in the Dieppe Raid.[18]

The poor speed of the Churchill nearly caused production to be ceased in favour of the forthcoming Cromwell tank; it was saved by the successful use of the Mk III at the Second Battle of El Alamein in October 1942.[citation needed]

The second major improved Churchill, the Mk VII, was first used in the Battle of Normandy in 1944. The Mk VII improved on the already heavy armour of the Churchill with a wider chassis and the British 75 mm gun, which had been introduced on the Mk VI. It was primarily this variant, the A22F, which served through the remainder of war. It was re-designated A42 in 1945.

The Churchill was a versatile project and was used in numerous specialist roles.

Design Edit

 
Churchill tanks of 9th Royal Tank Regiment during an exercise at Tilshead on Salisbury Plain, 31 January 1942. Front tank is a Churchill MK. 1

The hull was made up of simple flat plates, which were bolted together in earlier models and were welded in later models. The hull was split into four compartments: the driver's position at the front, then the fighting compartment including the turret, the engine compartment, and the gearbox compartment.[19] The suspension was fitted under the two large "panniers" on either side of the hull, the track running over the top. There were eleven bogies either side, each carrying two 10-inch wheels.[20] Only nine of the bogies normally took the vehicle weight, the front coming into play when the vehicle nosed into the ground or against an obstacle, the rear acting in part as a track tensioner. Due to the number of wheels, the tank could survive losing several without much in the way of adverse effects as well as traversing steeper terrain obstacles. As the tracks ran around the panniers, escape hatches in the side could be incorporated into the design. These were retained throughout the revisions of the Churchill and were of particular use when the Churchill was adopted as the AVRE.

The Bedford Vehicles engine was effectively two engines in horizontally opposed configuration ("flat twelve") on a common crankshaft. There were four Solex carburettors each on a separate manifold that fed three cylinders formed as a single cylinder head. The elements of the engine and ancillary components were laid out so they could be reached for maintenance through the engine deck covers. Air for the engine was drawn from the fighting compartment through air cleaners. Cooling air was drawn into the engine compartment through louvres on the sides, across the radiators and through the engine compartment by a fan driven by the clutch. This fan blew the air over the gearbox and out the rear of the hull. By opening a flap between the fighting compartment and the engine compartment, this airflow could be used to remove fumes produced by firing the armament. The 1,296 cu in (21.238 L) capacity engine was rated at 350 bhp (260 kW) at 2,000 rpm, delivering 960 lb⋅ft (1,300 N⋅m) torque over an engine speed range from 800 to 1,600 rpm.

The gearbox featured a regenerative steering system that was controlled by a tiller bar instead of the more commonplace brake levers or, as with the German Tiger I heavy tank, a steering wheel. The tiller was connected, with servo assistance, hydraulically to the steering brakes. The Churchill was also the first tank to utilise the Merritt-Brown triple differential gearbox, which allowed the tank to be steered by changing the relative speeds of the two tracks; this effect became more pronounced with each lower gear, ultimately allowing the tank to perform a "neutral turn" when no gear was engaged, where it could fully pivot within its own length and thus rotate in place. There were final reduction gears, of the planetary type, in the driving wheels.[21] Although capable of 17 mph (27 km/h) the noise at that speed was so great that the Churchill was limited to 10 to 12 mph (16 to 19 km/h) by not using the highest gear.[22]

The first turrets were of cast construction and were rounded in shape, providing sufficient space to accommodate the relatively small 2 pounder gun. To fulfil its role as an infantry support vehicle, the first models were equipped with a 3-inch howitzer in the hull[23] in a layout very similar to the French Char B1. This enabled the tank to deliver a useful high-explosive capability while retaining the anti-tank capabilities of the 2 pounder. However, like other multi-gun tanks, it was limited by a poor fire arc – the track horns limiting traverse – and elevation of only 9°. Despite the length of the gun the muzzle velocity was only 600 ft/s (180 m/s) .[note 5][22] The Mark IVA (retrospectively the Churchill Mk II) dispensed with the howitzer (there had been only enough guns to equip 300 tanks[22]) and replaced it with a bow machine gun[23] and on the Mk III, the 2 pounder was replaced with the 6 pounder, significantly increasing the tank's anti-tank capabilities. The tank underwent field modification in North Africa with several Churchills being fitted with the 75 mm gun of destroyed M4 Shermans. These "NA75" variants were used in Italy. The use of the 75 mm increased the effectiveness of the tank, as it was a generally superior weapon to the 6 pounder, possessing similar anti-tank capabilities, while also being considerably more effective when used in infantry support roles.[24]

Churchills made use of the Vickers Tank Periscope MK.IV. In the Mark VII, the driver had two periscopes as well as a vision port in the hull front that could be opened. The hull gunner had a single periscope as well as the sighting telescope on the BESA machine gun mounting. In the turret, the gunner and loader each had single periscope and the commander had two fitted in his hatch cupola.

The armour on the Churchill, often considered its most important feature, was originally specified to a minimum of 16 millimetres (0.63 in) and a maximum of 102 millimetres (4.0 in); this was increased with the Mk VII to a range from 25 millimetres (0.98 in) to 152 millimetres (6.0 in). Though this armour was considerably thicker than its rivals (including the German Tiger I tank, but not the Tiger II) it was not sloped, reducing its effectiveness. Earlier models were given extra armour by the expedient of welding on extra plates.

 
Close-up of road wheels and tracks of Churchill Mk. VII

On the Mark VII, the hull front armour was made up of a lower angled piece of 5.5 in (140 mm), a nearly horizontal 2.25 in (57 mm) plate and a vertical 6 inch plate. The hull sides, were, for the most part, 3.75 in (95 mm). The rear was 2 in (51 mm) and the hull top 0.525 in (13.3 mm). The turret of the Mark VII was 6 in (150 mm) to the front and 3.75 in (95 mm) for the other sides. The turret roof was 0.79 (20 mm) thick. Plate was specified as IT 80, the cast sections as IT 90.[25]

The A22F, also known as "Heavy Churchill", was a major revision of the design. The most significant part was the use of welding instead of riveted construction. Welding had been considered earlier for the Churchill but, until its future was assured, this was no more than testing techniques and hulls at the firing ranges. What welding reduced in the overall weight (estimates were around 4%), the thicker armour of the A22F made up for. Welding also required fewer man-hours in construction. The hull doors changed from square to round which reduced stresses. A new turret went with the new hull. The sides, which included a flared base to protect the turret ring, were a single casting while the roof, which did not need to be so thick, was a plate fitted to the top.[26]

Since the engines on the Churchill were never upgraded, the tank became increasingly slow as additional armour and armament was equipped and weight increased; while the Mk I weighed 40 long tons (41,000 kg) and the Mk III weighed 39 long tons (39,630 kg), the Mk VII weighed 40 long tons (40,640 kg). This caused a reduction in the tanks' maximum speed from its original 26 km/h (16 mph) down to 20.4 km/h (12.7 mph).[clarification needed]

Another problem was the tank's relatively small turret that prevented the use of powerful weapons; definitive versions of the tank were armed with either the QF 6-pounder or the derivative QF 75 mm gun. The 6-pounder was effective against armoured vehicles, but less so against other targets; the 75 mm was a better all-round weapon, but lacked in effectiveness against armour. Although the Churchills with their 6-pounders could outgun many contemporary German medium tanks (like the Panzer IV with the short-barrel 75 mm gun, and the Panzer III armed with the 50 mm gun) and the thick armour of all Churchill models could usually withstand several hits from any German anti-tank gun, in the later years of the war the German Panther tank had a 75 mm high-velocity cannon as its main armament along with increased protection, against which the Churchills' own guns often lacked sufficient armour penetration to fight back effectively.

The Churchill had many variations, including many specialised modifications. The most significant change to the Churchill was that it was up-gunned from 2-pounder to 6-pounder and then 75 mm guns over the course of the war. By the war's end, the late model Churchill Mk VII had exceptional amounts of armour – considerably more than the German Tiger tank. However, the firepower weakness was never fully addressed. The Mark VII turret that was designed for the 75 mm gun was of composite construction – cast with top and bottom plates welded into position.[15]

While it had weaknesses, the Churchill could cross terrain obstacles that most other tanks of its era could not.[27] This capacity frequently proved useful, especially during the fighting in Normandy. One action in Normandy where the tank's ability to surmount obstacles was found to be of value was the capture of Hill 309 on 30/31 July 1944 (Operation Bluecoat) conducted by VIII Corps.[28]

Production Edit

The Churchill tank was produced with Vauxhall as the design parent. Subcontracted work on some tanks was provided by Whessoe Foundry & Engineering, Metropolitan‑Cammell Carriage & Wagon, Babcock & Wilcox, Newton, Chambers & Company and the Gloucester Railway Carriage & Wagon Company; the latter two produced some complete vehicles. Other contractors produced hulls and turrets which went to Vauxhall, Charles Roberts & Co, and Dennis Brothers for final assembly.[29]

Churchill tank production[citation needed]
Model Years Production
Churchill I 1941 303
Churchill II 1941–42 1,127
Churchill III late 1942 675 or 692[30]
Churchill IV 1943 (together with Churchill V) 1,622
Churchill V 1943 (together with Churchill IV) 241
Churchill VI early 1944 (improved Churchill IV) 200
Churchill VII 1944 (together with Churchill VIII) 1,400
Churchill VIII 1944 (together with Churchill VII) 200

In March and April 1942, Vauxhall stopped producing new tanks. Together with Broom & Wade (at High Wycombe) they started rebuilding earlier tanks; about 700 of the first 1,000 built were included in this scheme. The reworked tanks got an "R" as a suffix to their WD number. Changes to the hull air intakes and the full length mudguards were the most obvious changes.[31]

Turrets for the earliest Marks were single piece castings. One thousand were supplied from the United States: 600 complete from General Steel and 400 from American Steel Foundries that were finished by other companies before shipping to UK.[32]

Service history Edit

Dieppe Raid Edit

 
Churchill tanks on the Dieppe beach. The "Y"-shaped pipes on the rear decking are exhaust pipe extensions to allow deep wading.

The Churchill first saw combat on 19 August 1942, in the Dieppe Raid in France. The Dieppe raid was planned to temporarily take control of the French port of Dieppe using a strong force of about 6,000 troops – mostly drawn from inexperienced Canadian units. The operation, codenamed Jubilee, would test the feasibility of opposed landings. Nearly 60 Churchill tanks from the 14th Army Tank Regiment (The Calgary Regiment (Tank))[note 6] were allocated to support the infantry and commandos; they would be put ashore by Landing Craft Tank vessels, along with the supporting engineers. Some problems were anticipated and allowed for: waterproofing of the hulls, canvas carpets ("Bobbin") to aid the tanks crossing the short stretch of shingle beach, engineer teams to demolish road blocks and a few of the tanks were fitted with flame-throwers. The tanks, a mix of Mark I with hull howitzers, Mark II (three with flamethrowers) and Mark III (some with Bobbin), were expected to enter the town and reach a nearby airfield before retiring back to the beach to be taken off by the LCTs. Half of the tank force would be held in reserve offshore.[34]

In the event, the German defences were stronger than expected. The beach was chert which included larger stones than the anticipated shingle: according to history professor Hugh Henry, the German defenders had previously considered it impassable to tanks.[35] Only the 30 Churchills in the first two waves of 10 LCTs were landed on the beach under heavy fire: the latter two waves were turned away. One Churchill was trapped in its LCT by shellfire. Of the 29 remaining (eight Mark I/IIs, three Oke flamethrower tanks, and 18 Mark IIIs), two sank en route to shore, and 11 were immobilized on the beach due to a combination of the chert shingle and indirect fire. Only 15 would get off the beach and over the sea wall onto the Dieppe promenade. Although these tanks were effective in engaging the defenders in the town's buildings, their further progress was blocked by concrete defences; the engineer demolition teams – killed or pinned on the beach – had not been able to accompany the tanks. Ten of these Churchills were able to return to the beach once the withdrawal had been signalled but they could not be evacuated. According to Henry, no Churchills were penetrated by German anti-tank fire while still manned.[36] These surviving tank crews fought to cover the withdrawal of the infantry from the beach, and almost all were captured with their vehicles, having exhausted their main gun ammunition. The tank regiment's commanding officer, Lieutenant-Colonel Johnny Andrews, was among those killed in action. Nearly 70% of the Canadians were killed, injured or captured and none of the raid's objectives were met other than the secret raid on the radar station on a headland.[37]

North Africa Edit

 
Churchill Mark III tanks of 'Kingforce' during the Second Battle of El Alamein

Two Mark II had been sent to North Africa for trials and they were joined by six Mk III Churchills (with the 6 pounder) to form the Special Tank Squadron commanded by Major Norris King. They saw action in the Second Battle of El Alamein in October 1942. This detachment, called "Kingforce", supported the attack of 7th Motor Brigade first with three tanks at Kidney Ridge (where one was hit "repeatedly" by anti-tank gun fire (including "friendly fire" from a British gun) and another took "a lot of punishment"), then the remaining five at Tell-el-Aqqaqir.[38] The Churchills were fired on many times by Italian and German anti-tank guns, but only one was knocked out and partially caught on fire.[39] One tank was said to have been hit up to 80 times.[40][41]

Kingforce, formed to test whether the Churchills could operate in Africa, was considered too slow to participate in the chase after the retreating Axis, sent back to Alexandria and disbanded after El Alamein.[38] The 25th Army Tank Brigade of three regiments was sent to Africa, and went into action in February 1943 during the Tunisian campaign.[note 7] It was followed by 21st Army Tank Brigade.

Churchill tanks took part in containing the German offensive of Operation Ochsenkopf in February – March 1943. At a place called Steamroller Farm, two Churchill Mk III tanks of 51 RTR got ahead of their squadron. They came across an entire German transport column, which they ambushed and completely shot up before they rejoined. The result was the destruction of two 88 mm, two 75 mm and two 50 mm, four lesser anti-tank guns, 25 wheeled vehicles, two 3-inch mortars, two Panzer III tanks and infliction of nearly 200 casualties.[42]

A Churchill tank in a hull down defensive position made a particular contribution to Allied success. In one encounter, on 21 April 1943, during the start of the Battle of Longstop Hill, a Churchill tank of the 48th Royal Tank Regiment got the better of a German Tiger I heavy tank. A 6 pounder shot from the Churchill lodged between the Tiger's turret and turret ring, jamming the turret and injuring the German crew. They abandoned the Tiger, which was subsequently captured by the British. Known as Tiger 131, this was the first Tiger captured by the Western Allies and was particularly useful for intelligence. Tiger 131 has since been restored to full working condition and is now on display at The Tank Museum in Dorset, UK. As of early 2021, it is the only working Tiger tank in the world.[43]

Italy Edit

 
North Irish Horse Churchill advancing towards Florence, 23 July 1944

Churchill tanks were not initially used in the Italian mainland in 1943. There were six regiments with Churchills in Tunisia, these may have been kept out because Montgomery preferred the Sherman or because their 6-pdr guns were not considered suitable for the fighting in Italy.[44] Churchills did land in Italy in April/May 1944 with 75mm gun armed Churchills arriving later.[44] As the mainstay of the Tank Brigades, which operated in support of the infantry, Churchill units were in operation more often than other tank units.[45]

The Churchill NA75's, Churchill Mark IVs converted to carry the US 75 mm gun, were used in Italy.[46] As the Churchill proved to be a better gun platform than the Sherman, the effective range of the 75 mm was increased.[47]

North-West Europe Edit

Churchills saw widespread action in Normandy during the Battle of Hill 112 and Operation Bluecoat, as well as subsequent operations in the Low Countries and into Germany, such as the fighting in the Reichswald during Operation Veritable.

The Churchill was able to cross the muddy ground and force through the forests of the Reichswald; a contemporary report expressed the belief that no other tank could have managed the same conditions.[48]

Burma and India Edit

A single Churchill, possibly a Mk V, was trialled in Burma in 1945. It was operated by the 3rd Dragoon Guards (Carabiniers) from the end of April 1945 for about a month. Although it proved impossible to bring the Churchill into action, on approach marches the tank proved at least the equal to the M3 Lee then in service.[49]

The 254th Indian Tank Brigade returned to India from Burma, arriving at Ahmednagar during July 1945. The brigade immediately began conversion from the Lee to the Churchill, the intention being for the newly equipped brigade to return to operations in October 1945. At the time, it was assumed that the war against Japan would continue and that the new battleground would be Malaya. Although a small number of tanks were delivered, and some training undertaken, the end of the war against Japan meant that the conversion was not completed. At the end of September, the 254th Indian Tank Brigade was reassigned and posted away from Ahmednagar. All the Churchills delivered up to that point were returned to the Ordnance Depot at Kirkee (Khadki) by the end of November–early December 1945. Of the three regiments (battalions) involved, the 3rd Dragoon Guards accompanied the 254th Brigade when posted away while the 149th Regiment Royal Armoured Corps and the 150th Regiment Royal Armoured Corps were eventually disbanded at Ahmednagar on 28 February 1946, the majority of personnel already having been repatriated to the United Kingdom or posted to other units.[50]

Other theatres Edit

In mid-1944, at the request of Britain's War Office, the Churchill was tested by the Australian Army, along with the M4 Sherman. The results were to be used to determine any modifications required for use in the tropics; Matildas were used as a reference point in the tests at Madang, New Guinea. The Churchill was found to be, overall, superior to the other tanks for jungle warfare.[51][52]

It was not used in the Pacific War; only 46 of the 510 Churchills ordered by Australia were delivered by the end of the war, and the remainder of the order was cancelled.[citation needed]

Korean War and after Edit

During the Korean War, the United Kingdom deployed 20 Churchill tanks from the C Company, 7th Royal Tank Regiment, and arrived on the Korean Peninsula along with its first sent troops in November 1950. Most of these tanks were Mk. VII (A42) 'Crocodile' flame-throwing tanks; despite being a flame-thrower, they were used like a regular tank. In addition, the Assault Vehicle Royal Engineers (AVRE), Armoured Recovery Vehicle (ARV), and Bridgelayers variants were brought together.[53]

In action against the Chinese, they mostly fought as gun tanks, for example in the Third Battle of Seoul. To restore the 1st Battalion, Royal Northumberland Fusiliers' position during the defence of Seoul, Brigadier Thomas Brodie of the 29th Infantry Brigade sent four Churchill tanks as reinforcement; their contributions to the battle were widely praised by British and American historians.[54]

The Churchill tank was briefly operated in 1950 to 1951, and withdrew in October 1951 from Korea. All Churchills retired from the British Army in 1952.[53]

USSR Edit

 
A Soviet Churchill Mk IV passes a knocked-out German Sd.Kfz 232 (8-Rad) armoured car at the fourth battle of Kharkov in 1943
 
A captured Soviet Churchill Mk IV, 1943

The Soviet Union was sent 301 Churchill tanks (45 Mk II, 151 Mk III and 105 Mk IV) as part of the Lend-Lease programme.[55] 43 of them (19 Mk II and 24 Mk III) were lost en route on the Arctic Convoys.[55] Delivery of the first 25 units took place in May 1942,[56] but adoption by the Red Army was delayed because of the 30 that were sent by June 1942, 20 had been lost in shipping.[56]

The Churchill was not very popular in Soviet service.[56] Soviet operators disliked the 2 pdr gun of the Mk II version (also used by Matildas and Valentines shipped to the USSR),[56] and the tank was considered "sufficient" by inspectors, who warned that it was "unrefined" in terms of both design and production and would require constant maintenance in the field.[56] Like Soviet heavy tanks, they were assigned to separate breakthrough tank regiments tasked with infantry support.[57]

In 1942–1943, Churchills were used in the Battle of Stalingrad (47th and 48th regiments of heavy tanks – 42 Churchills). In 1943, the Soviet 5th Guards Tank Army used Churchills in the Battle of Prokhorovka (15th and 36th regiments of heavy tanks – 42 Churchills) during the Battle of Kursk, and in the Fourth Battle of Kharkov. It was also used in other battles until 1944 (82nd regiment of heavy tanks).[57]

The Churchills were also employed at the Finnish front, and they took part on the capture of Viipuri 1944. The Finnish forces reported to have destroyed "three heavy tanks of previously unknown type", which after the war were recognized as Churchill III tanks.

Ireland Edit

The Irish Army took delivery of three Churchill Mk VI tanks in 1948 and a fourth in 1949. These were rented from the British War Office as trials vehicles until 1954, when they were purchased outright. This purchase was despite the fact that the supply and transport corps workshops, which maintained them, had reported that spares had all but run out.[58] Experiments were carried out involving replacing the existing Bedford engine with a Rolls-Royce Merlin engine salvaged from an Irish Air Corps Supermarine Seafire aircraft on one tank. The experiment was a success, but not followed up on the other tanks although the reasons are not recorded.[58] By 1967, only one Churchill remained serviceable, and by 1969 all were retired. One remains preserved in the Curragh Camp.

Variants Edit

 
Churchill Mark I with hull-mounted 3-inch howitzer in exercises on Salisbury Plain, January 1942
 
Churchill Mark III, looking noticeably different from the Mark I, with a new turret and gun, and new side skirtings for the tracks
 
Churchill Mark VI
 
Churchill Mark VII
 
Churchill Mark VIII with 95 mm howitzer

During the course of the war, as well as new production, older vehicles were reworked to bring them up to later standard. For example, 2-pdr turrets were replaced with the 6-pdr turret, and the improved commander's cupola (with eight periscopes) introduced after the first Mark VII was applied to some earlier marks as well. Nearly 3,100 Churchills of all marks were rebuilt.[59] Early tanks were produced before the Churchill name was attached and were retroactively known as Churchill Mark I etc.

Churchill tank development
I
II
OKEIIcs
III/IV
AVRE75mmVIV
ARKXXIIX[LT]
VII
CrocodileVIIIAVRE

The following Churchill variants saw primary use as battle tanks:

Churchill I
303 produced. Equipped with a 40 mm Ordnance QF 2-pounder gun in the turret with 150 rounds and a coaxial Besa machine gun. There was an Ordnance QF 3 inch howitzer in the hull, with 58 rounds, for use against infantry. It was a tank that was noted for poor mechanical reliability. It was used alongside Mark IIs and IIIs with Canadian forces on the Dieppe Raid and in Tunisia; some were still in use late in the war in Italy on the Gothic Line.[60]
Churchill Mk II
1,127 produced. Replaced the hull howitzer with another machine gun to reduce cost and complexity. Sometimes referred to as "Churchill Ia".
Churchill Mk IICS
Close support. Placed the 2-pounder gun in the hull and the howitzer in the turret, available in very limited numbers. Sometimes called the "Churchill II". Not used in combat.[59]
Churchill Mk III
675 produced. The III was the first major armament overhaul of the series, eliminating the hull howitzer and equipping the tank with a more powerful Ordnance QF 6-pounder gun with 84 rounds. It had a new welded, "cleaner", squarish turret (from Babcock & Wilcox Ltd) unlike earlier versions. The availability of rolled armour plate limited the number that could be built – leading to the Mark IV. The first Mark to have "catwalks" over the upper track runs to protect the tracks; examples later upgunned with the QF 75 mm gun are known as the Churchill III*.
Churchill Mk IV
1,622 produced. The IV, the most numerous Churchill produced, was virtually identical to the III, the largest change being a return to the cheaper cast turret, keeping the welded turret's "clean" squarish shape. A tank telephone was fitted to the rear of the tank for communication with infantry. In earlier models, turrets using the 6-pounder Mark V were fitted with a counterweight. Two hundred and ten were refitted in North Africa with US 75 mm guns taken from battle-damaged M4 Sherman tanks (the Churchill NA75's), while others were up-gunned with British Ordnance QF 75 mm guns, creating the Mark IV (75).[46] The QF 75 mm had a muzzle brake unlike the 6-pounder.
Churchill Mk V
241 produced. A Churchill equipped with a close support Ordnance QF 95 mm howitzer with 47 rounds in place of the main gun in a cast turret. The gun could fire smoke, HE, or HEAT round with a maximum range of 6,800 yd (6,200 m). [61] Produced from the Mark IV production run at about 1 in 10.[61] The turret was similar to the Marks IV/VI turrets, with a slightly different opening for the gun in the turret front face.
Churchill Mk VI
200 produced. Along with several minor improvements, such as an additional collar at the turret base protecting the turret ring, it was produced as standard with the 75 mm Mark V gun. Few were built due to the impending release of the VII and concurrent up-gunning of the Marks III/IV.
Churchill Mk VII (A22F)
1,600 produced, together with Mark VIII. The second big redesign, the VII used the 75mm gun, was wider and carried much more armour, 50 per cent thicker at the front than a Tiger I, giving it the ability to withstand massive amounts of punishment.[62] It is sometimes called the "Heavy Churchill" and was given the specification number "A42" in 1945. This version of the Churchill first saw service in the Battle of Normandy and equipped three Royal Armoured Corps regiments in western Europe, one in Italy and with 7th Royal Tank Regiment in Korea. The Mark VII was designed to be able to be converted into the "Crocodile" flame-throwing variant without major modification.[62]
Churchill Mk VIII
1,600 produced, together with Mark VII. A Churchill VII with a 95 mm howitzer and 47 rounds in a slightly different turret.
Churchill Mk IX
Churchill III/IV upgraded with extra armour added to hull and turret, along with gearbox and suspension modifications. If the original turret was retained without added armour it was called LT ("Light Turret").
Churchill Mk X
The same improvements as for the IX applied to a Mk VI.
Churchill Mk XI
The same improvements as for the IX applied to a MkV CS. Does not appear to have been built.[63]
Churchill NA75
210 produced.[46] Churchill IVs with 6-pounder guns replaced (under Operation Whitehot[47]) by US 75 mm guns and mantlets from destroyed or scrapped Sherman tanks, fitted to Churchill IV cast turrets. Their performance was virtually identical to the VI. They were known as NA75 (North Africa 75) where the first conversions took place, after 48 Shermans with new guns had been disabled by mines.[64] Some Mark IIIs were also modified, using Mark IV turrets. To fit the Sherman mantlet required cutting away the front of the Churchill turret before it was welded in place, then the mantlet slot had to be cut away to give sufficient elevation. The Sherman 75 mm gun was designed for a left hand loader and the Churchill, in common with British practice, had a right hand loader. The gun was turned upside down and the firing controls adapted.[65] The conversion of about 200 tanks was carried out between March and June 1944 and the conversion project earned the officer in charge, Capt. Percy Morrell, an MBE and a promotion.

Specialist vehicles Edit

In addition to the tanks, several specialist Churchill variants were developed, chiefly for combat engineering roles.

 
AVRE 230mm Petard Mortar and its ammunition (projectile standing on its flat nose, with tail facing up, at right)

The Churchill Assault Vehicle Royal Engineers was a Churchill III or IV armed with a spigot mortar demolition weapon[66] which replaced the 6 pounder gun. The effective range of the 230mm high-explosive "flying dustbin" round was only around 80 yards of 230 yard maximum range. Crew was increased to six to accommodate a demolition NCO in addition to driver, commander, gunner, wireless operator, and co-driver/machine gunner. As well as the mortar ammunition it carried "General Wade" 26 lb explosive charge, and "Beehive" charges of up to 75 lbs of explosive. Both types of charge had to be set manually, but could be detonated from the relative safety of the AVRE interior. The AVRE could be fitted to carry different combat engineering equipment.

The Churchill Crocodile was a flamethrower tank which replaced the hull machine gun with a flamethrower and towed an armoured fuel trailer.

Churchills were converted to "Kangaroo" armoured personnel carriers by removing the turret from Churchills.

Further development Edit

 
Side view of the Black Prince, probably taken near the end of the war.

The Black Prince, General Staff specification A43), was a development of the Churchill design. In 1943, an attempt was made to produce a Churchill with the same 17 pounder that the Sherman Firefly, a British modification of the American M4 Sherman, on a Churchill chassis and turret. It was known that insufficient numbers of the 17 pounder armed Cruiser Mk VIII Challenger were going to be produced in time for the invasion of Europe, and work was only starting on the Centurion cruiser design. Due to the wider turret ring required, Vauxhall had to redesign the hull though it used as much of the Churchill Mark VII as possible including retaining the Bedford Flat-12 engine which led to the heavier Black Prince being consequently much slower, going from 15 MPH (24 km/h) to 10.5 MPH onroad, and 7.5 mph offroad. This resulted in the "Tank, Infantry, Black Prince (A43)". Six prototypes were built and delivered in May 1945 just as the war in Europe was ending. The test programme was completed but the project was cancelled due to the success of the new and less complicated Centurion Mark I, which offered the same armament and frontal armour, was faster and more manoeuvrable, and had just entered production.[67] There are 2 surviving Black Princes as of today. The one that is fully intact is No. 4 of the prototypes, and is displayed at The Tank Museum in Bovington. The second surviving Black Prince is only a hull, recovered from Salisbury plain in the 80s as part of the Tony Budge collection. It is now held as of today by the Rex and Rod Cadman collection. After the Black Prince, no more Churchills were developed, as the army had shifted in favour of the above mentioned Centurion, which was mainly claimed as the first Main battle tank, and also, the British army was going through a change of doctrine, meaning large infantry tanks to support men were no longer needed on the front.

Operators Edit

Surviving vehicles Edit

 
The Churchill Trust's Mark IV participating in The Tank Museum's Tankfest 2012[69]

A number of Churchills still exist as gate guardians or war memorials, while many examples reside in museums. Jacques Littlefield's Military Vehicle Technology Foundation in California, United States, acquired a Flail FV3902 "Toad" in its collection in 2008 after it was restored to full working order by RR Services in Kent, England; it was subsequently sold at auction and acquired by the Australian Armour and Artillery Museum.[70][71] There are two Churchill Mark IVs at Normandy in France; one is residing at Lion-sur-Mer, while the other is located at Graye-sur-Mer.[72]

The Churchill Trust is a project that aims to restore existing Churchills to their original condition and working order. So far, a Mark III AVRE with appliqué armour,[73] salvaged from a firing range, and a post-war Mark IV Twin-ARK have been restored to running condition.[74] The specialist equipment was removed and turrets were added, converting both tanks into their original variants. As of 2016 the project was in the process of restoring a Mark VII AVRE recovered from a range in northern England.[75][76]

The Tank Museum in Bovington Camp, Dorset, England, currently has four Churchills in its collection: a Mark VII in The Tank Story Hall as a static exhibit, a working Mark III AVRE as a static display (currently located in the Museum's Conservation Hall), a Mark VI returned to the Museum after the closure of the Isle of Wight Military History Museum (also currently located in the Museum's Conservation Hall)[77] and a Mark II (with cosmetic alterations to make it appear as a Mark I) as an outdoor static display.[78][72] The museum's Mark VII was the last Mark VII produced; it went directly to the museum from the factory, and in terms of mileage, is virtually brand new.[62] The Mark III AVRE was salvaged from a firing range marker as a complete wreck. It was restored to running order by Bob Grundy of Wigan and his Tracked Armour Group in August 1988.[79][72] The Museum also has the only surviving Black Prince prototype.[80]

The Churchill Trust and the Tank Museum are not affiliated or associated with one another in any way; their tanks are different and owned separately, and the only common ground between both parties is that the Churchill Trust sometimes sends its tanks to participate in the Tank Museum's annual Tankfest event. Additionally, the Churchill Trust's tanks were all specialist vehicles, but were converted back into the standard turreted heavy tank variants during restoration. In 2018 the two parties concluded a long-term agreement that saw the Churchill Trust loan all three of its Churchills to the Tank Museum, with the III* becoming a permanent part of the Museum's fleet of running vehicles and the IV and VII being included in the Museum's Second World War exhibitions.[81] The Churchill III* was restored in time for Tankfest 2019, and ran at the event.[82]

The Cavalry Tank Museum, Ahmednagar. Maharashtra, India has one Churchill Mark VII, a Mark X (uparmoured Mk VI chassis; Mk VII turret; 75mm gun; Mk VII driver's visor and MG mount), a Churchill bridgelayer and a Churchill ARV.[83]

A Mk. VII Churchill Tank stands at the side of the Marine Highway, Carrickfergus, Co. Antrim. The restored vehicle was a gift to the Borough from the Trustees of the North Irish Horse Regimental Association.

See also Edit

Notes Edit

  1. ^ TOAD Flail in reserve for British Army until mid-1960s
  2. ^ It was thought the muzzle might catch in the ground, and a shortened version would have poor ballistics
  3. ^ Who was also responsible for the triple differential design of the Merritt-Brown gearbox used in the Churchill.
  4. ^ introduction of the 6-pounder gun into British use was delayed by the need to re-arm after the loss of equipment and production did not start until October 1941 and some designs in production could not take the larger gun
  5. ^ The howitzer could fire smoke or HE but only smoke was carried as the range of the HE round was short and firing smoke was the purpose of the close support (CS) gun
  6. ^ They replaced the 48th Royal Tank Regiment[33]
  7. ^ North Irish Horse, 51st Royal Tank Regiment and 142nd Regiment Royal Armoured Corps

Citations Edit

  1. ^ Tank Museum, Bovington. Tank Infantry Mark IV A22F, Churchill VII
  2. ^ Churchill Infantry Tank by David Fletcher page 31
  3. ^ Churchill Infantry Tank by David Fletcher page 8
  4. ^ "Britain's Struggle To Build Effective Tanks During The Second World War". Imperial War Museums. Retrieved 4 March 2019.
  5. ^ Churchill Tank (1983) p. ix.
  6. ^ p. 101, Victor Sims, Churchill the Great, The Best Stories, The Daily Mirror Newspapers Ltd, 1962
  7. ^ a b c Fletcher 2019, p. 4.
  8. ^ a b c d Fletcher 2019, p. 5.
  9. ^ Fletcher 2019, pp. 5–6.
  10. ^ Fletcher p. 21
  11. ^ Perrett, p. 4
  12. ^ Fletcher 2019, p. 7.
  13. ^ Fletcher, pp. 21, 58
  14. ^ a b Fletcher, David (1983) [1944]. Churchill Tank (Reprint of original WW2 operating manuals ed.). His Majesty's Stationery Office/The Tank Museum. pp. vii, 9(3), 29(19). ISBN 978-0-11-290404-5.
  15. ^ a b "Fabrication of the new Churchill Tank, MK VII"
  16. ^ Robotham 1970, pp. 139–144.
  17. ^ Fletcher p. 59
  18. ^ Fletcher 2019, p. 19.
  19. ^ White 1983, pp. 7–8.
  20. ^ White 1983, p. 8.
  21. ^ David Fletcher, Churchill Infantry Tank, Osprey Publishing, ISBN 978-1472837349, 2019, p. 11
  22. ^ a b c Fletcher 2019, p. 12.
  23. ^ a b White 1983, p. 9.
  24. ^ Bird, Lorrin Rexford; Livingston, Robert D. (2001). WWII Ballistics: Armor and Gunnery. Overmatch Press. pp. 115, 120.
  25. ^ Churchill – vehicle history and specifications
  26. ^ Fletcher 1993.
  27. ^ The Tank Book. Dorling Kindersley. 2017. p. 94. ISBN 978-0-2412-5031-0.
  28. ^ Perrett, pp. 34–35.
  29. ^ . Archived from the original on 26 July 2011. Retrieved 6 March 2010.
  30. ^ Fletcher 2019 p. 19
  31. ^ Fletcher (2019) pp. 24–25
  32. ^ Fletcher 2019, p. 14.
  33. ^ Fletcher (2019) p. 20
  34. ^ Fletcher 2019, pp. 20–21.
  35. ^ Henry, Hugh G. (1995), "The Calgary Tanks at Dieppe", Canadian Military History, 4 (1)
  36. ^ Henry p. 70
  37. ^ Perrett pp. 15–16
  38. ^ a b Fletcher 2019 p. 24
  39. ^ Photo E18830 in the Imperial War Museum collection shows a knocked out Churchill Mk III among "abandoned Italian M13/40 tanks" at El Alamein, 2 November 1942.
  40. ^ . Archived from the original on 21 August 2010.
  41. ^ Perrett p. 17
  42. ^ "War Monthly". No. 34–45. War Monthly Publications. 1976.
  43. ^ (PDF), Tank Times, p. 3, February 2012, archived from the original (PDF) on 6 October 2014
  44. ^ a b Fletcher 2019, p. 29.
  45. ^ Perrett p. 11
  46. ^ a b c Fletcher 2017, pp. 172–3.
  47. ^ a b . The North Irish Horse and Steeds of Steel. Archived from the original on 22 February 2011.
  48. ^ Veale, Lt-Col P.N., "Report on 34 Armoured Brigade Operations: The Reichswald Forest Phase, 8 to 17 February 1945", royaltankregiment.com, retrieved 6 May 2016
  49. ^ "Churchills in Burma and India"; "Performance of the Churchill Tank in Burma – 1945" by Steve Rothwell. Retrieved 11 April 2018
  50. ^ "Churchills in Burma and India" by Steve Rothwell. Retrieved 11 April 2018
  51. ^ "The Churchill in Australian Service" by Micheal Grieve
  52. ^ , archived from the original on 26 April 2012
  53. ^ a b Bak, Dongchan (2021). Korean War : Weapons of the United Nations (PDF) (in Korean). Republic of Korea: Ministry of Defense Institute for Military History. pp. 140–143. ISBN 979-1155980798.
  54. ^ Farrar-Hockley, Anthony (1990), Official History: The British Part in the Korean War, Volume I, London: HMSO, p. 389, ISBN 0116309539
  55. ^ a b Zaloga 2017, p. 46.
  56. ^ a b c d e Zaloga 2017, p. 24.
  57. ^ a b Zaloga 2017, p. 25.
  58. ^ a b Martin, Karl (2002). Irish Army vehicles: transport and armour since 1922. p. 58. ISBN 978-0954341305.
  59. ^ a b AFV Profile
  60. ^ New Vanguard p6
  61. ^ a b Fletcher 2019, p. 28.
  62. ^ a b c "Tank Infantry Mark IV A22F, Churchill VII (E1949.339)". tankmuseum.org. The Tank Museum. Retrieved 5 May 2016.
  63. ^ Fletcher 2019 p. 44
  64. ^ Fletcher 1993, pp. 25–26.
  65. ^ Perrett, p. 9
  66. ^ Armoured Archives. "AVRE 230MM – Fact Checking". YouTube. Archived from the original on 7 July 2022.[user-generated source]
  67. ^ Chamberlain & Ellis (1969) p. 77
  68. ^ Rulers of Iraq and Saudi Arabia bury an old feud with big party in Baghdad Life 27 May 1957
  69. ^ "The Churchill Trust at Bovington Tank Museum". Facebook. The Churchill Trust. 22 August 2013. Retrieved 5 May 2016. The Churchill Mark IV at Bovington Tankfest 2012.
  70. ^ "RM Sotheby's – FV3901 Churchill Toad Flail Tank | The Littlefield Collection 2014". RM Sotheby's. 13 November 2017. Retrieved 1 February 2019.
  71. ^ "FV3902 Churchill Toad". Tank Encyclopedia. 15 January 2017. Retrieved 1 February 2019.
  72. ^ a b c "Churchill AVRE". armourinfocus.co.uk. Armour in Focus. Retrieved 8 May 2016.[permanent dead link]
  73. ^ "The Churchill Trust added 3 new photos". Facebook. The Churchill Trust. 27 July 2014. Retrieved 5 May 2016.
  74. ^ "The Churchill Trust added 3 new photos". Facebook. The Churchill Trust. 24 August 2014. Retrieved 5 May 2016.
  75. ^ "The Churchill Trust added 13 new photos". Facebook. The Churchill Trust. 30 January 2016. Retrieved 5 May 2016.
  76. ^ "The Churchill Trust added 3 new photos". Facebook. The Churchill Trust. 19 January 2016.
  77. ^ "Unique ID 1378: A22 Churchill Tank". preservedtanks.com. preservedtanks.com. 2 November 2010. from the original on 8 December 2019.
  78. ^ "Unique ID 1376: A22 Churchill Tank". preservedtanks.com. preservedtanks.com. Retrieved 10 February 2019.
  79. ^ "Tank Infantry A22B Churchill Mark III AVRE (E1988.88)". tankmuseum.org. The Tank Museum. Retrieved 5 May 2016.
  80. ^ "Unique ID 1954: A43 Black Prince Tank". preservedtanks.com. preservedtanks.com. Retrieved 10 February 2019.
  81. ^ "Special Guest 3: Churchill Mk3 – The Churchill Trust". www.tankmuseum.org. tankmuseum.org. Retrieved 22 May 2019.
  82. ^ "*Tank Museum Star* Churchill Mark III". www.tankmuseum.org. tankmuseum.org. Retrieved 22 May 2019.
  83. ^ Mohit S on Flickr, accessed April 2018. Chamberlain and Ellis (1971) p. 20

References Edit

External links Edit

  • . royaltankregiment.com. The Royal Tank Regiment Association. Archived from the original on 26 July 2011. Retrieved 6 March 2010.
  • – aiming to restore a Mk III, Mk, IV, and Mk VII.
  • Churchill Infantry Tank (A.22). wwiiequipment.com. from the original on 10 August 2011. Retrieved 24 April 2012.
  • Armour in Focus A22
  • Henk of Holland
  • OnWar specifications:
  • Churchills in Soviet Union
  • Memories of Frank Meredith 17 May 2006 at the Wayback Machine, 9th Battalion Driver/Mechanic 1942–45
  • "Churchills in Burma and India", at The Burma Campaign web site

churchill, tank, tank, infantry, churchill, british, infantry, tank, used, second, world, best, known, heavy, armour, large, longitudinal, chassis, with, around, tracks, with, multiple, bogies, ability, climb, steep, slopes, basis, many, specialist, vehicles, . The Tank Infantry Mk IV A22 Churchill was a British infantry tank used in the Second World War best known for its heavy armour large longitudinal chassis with all around tracks with multiple bogies its ability to climb steep slopes and its use as the basis of many specialist vehicles It was one of the heaviest Allied tanks of the war Tank Infantry Mk IV ChurchillA Churchill Mark IV tankTypeInfantry tankPlace of originUnited KingdomService historyIn service1941 1952 British Empire note 1 Used bySee OperatorsWarsSecond World War Korean WarProduction historyDesignerHarland amp Wolff A20 Vauxhall Motors A22 ManufacturerVauxhall Motors and othersProduced1941 1945No built5 640 approx 1 VariantsSee VariantsSpecificationsMass39 1 t 38 5 long tons Mark I 40 7 t 40 1 long tons Mark VII Length24 ft 5 in 7 44 m Width10 ft 8 in 3 25 m Height8 ft 2 in 2 49 m Crew5 commander gunner loader radio operator driver co driver hull gunner ArmourFor Churchill I VI 102 mm hull front 76 mm hull side 51 mm hull rear 89 mm turret front 76 mm turret side and rear Mark VII VIII 152 mm hull and turret front 95 mm hull sides and turret sides and rear 51 mm hull rearMainarmamentQF 2 pounder Mark I and II QF 6 pounder Mark III and IV QF 75mm Mark VI and VII QF 95mm Mark V and VIII Secondaryarmamentone coaxial 7 92mm Besa machine gun 3 inch howitzer Mark I or one Besa MG other marks EngineBedford 12 cylinder 4 stroke water cooled horizontally opposed L head petrol engine350 hp 261 kW at 2 200 rpmPower weight9 1 hp 6 7 kW tonneTransmissionMerritt Brown 4 speed constant mesh epicyclic gearboxSuspensionCoiled springFuel capacity150 Imperial Gallons 682 liter 2 Operationalrange75 130 miles 120 210 km 3 Maximum speed15 mph 24 km h SteeringsystemTriple differential steering in gearboxThe origins of the Churchill s design lay in the expectation that war in Europe might be fought in conditions similar to those of the First World War and thus emphasised the ability to cross difficult ground The Churchill was hurried into production in order to build up British defences against a possible German invasion The first vehicles had flaws that had to be overcome before the Churchill was accepted for wide use After several marks versions had been built a better armoured specification the Mark VII entered service with the British Army The improved versions performed well in the later stages of the war 4 The Churchill was used by British and other Commonwealth forces during the North African Italian and North West Europe campaigns In addition 344 Churchills were sent as military aid to the Soviet Union during the Second World War and more than 250 saw active service on the Eastern Front Contents 1 Name 2 History 2 1 A20 2 2 A22 3 Design 4 Production 5 Service history 5 1 Dieppe Raid 5 2 North Africa 5 3 Italy 5 4 North West Europe 5 5 Burma and India 5 6 Other theatres 5 7 Korean War and after 5 8 USSR 5 9 Ireland 6 Variants 6 1 Specialist vehicles 6 2 Further development 7 Operators 8 Surviving vehicles 9 See also 10 Notes 11 Citations 12 References 13 External linksName EditThe Churchill tank was named either after Prime Minister Winston Churchill dubious discuss 5 who had promoted the development of the tank in the First World War or after John Churchill 1st Duke of Marlborough Churchill told Field Marshal Jan Smuts That is the tank they named after me when they found out it was no damn good 6 The name only incidentally matched what became the British Army practice of giving service names beginning with C to tanks Cruiser tanks were given names such as the contemporary Covenanter Crusader Cromwell Cavalier and Comet but infantry tank naming had no particular pattern Post war the merging of the cruiser and infantry tank lines in the universal or main battle tanks continued with C names Centurion Conqueror Chieftain and Challenger citation needed History EditA20 Edit Main article A20 heavy tank Initially specified just before the outbreak of the Second World War the A20 its General Staff specification was to supplement the Matilda II and Valentine infantry tanks In accordance with British infantry tank doctrine and based on the expected needs of attacking a fixed defensive line crossing wide trenches possibly shell cratered ground similar to First World War trench warfare 7 it was to be immune to the current German 3 7 cm Pak 36 anti tank guns and carry an unditching beam 7 A general outline produced by Woolwich Arsenal was expanded by Belfast shipbuilders Harland amp Wolff with advice from the Department of Tank Design 8 The General Staff had proposed that it was armed with two QF 2 pounder guns each located in a side sponson with a coaxial Besa machine gun A third Besa and a smoke projector would be fitted in the front hull To reduce weight the specification was revised to prefer a maximum armour to the front of 60 mm sufficient to protect against ordinary shells from the German 37 mm gun 8 Outline drawings were produced by Woolwich Arsenal based on the A12 Matilda turret the Director of Mechanisation opposed a turretless design and the engine and Wilson epicyclic transmission being developed for the A13 Mark III Covenanter tank 8 Detail design and construction of the A20 was left to Harland amp Wolff who completed four prototypes by June 1940 During the construction period the armament was reconsidered including fitting either a 6 pounder gun or the French short 75 mm gun as used on Char B1 in the forward hull the former was considered too long note 2 and the latter would require redesigning the front of the hull 9 In the end a 3 inch howitzer was chosen 10 11 The A20 designs were short lived however as at roughly the same time the defeated British Expeditionary Force was evacuated from Dunkirk While intended for positional warfare and direct assaults against fortifications it was referred to as Shelled Area Tank or by the French phrase Char de Fortresse which had been rendered pointless by the fast pace of German armoured warfare a heavy tank that could defend the infantry from other tanks was still desired 12 At an initial 32 tons with a 300 hp flat 12 Meadows DAV engine the A20 had limited power compared to the 16 ton Covenanter 8 This was a less serious limitation than it might appear owing to the British distinction between the high speed cruiser tanks and the slow speed infantry tanks Vauxhall who were already involved as consultants on the suspension 7 were approached to see if they could build the A20 and one example was sent to Vauxhall at Luton to see if they could provide an alternative engine developing 350 bhp To this end they developed a flat 12 petrol engine 13 For speed of production this engine was based on a Bedford Vehicles Vauxhall s commercial vehicle operations six cylinder lorry engine giving rise to its name of Twin Six 14 Although using sidevalves to fit within the space the engine was developed with high squish pistons dual ignition and sodium cooled exhaust valves in Stellite seats to give 350 bhp 14 A22 Edit With France lost the scenario of trench warfare in Northern Europe was no longer applicable and the design was revised by Dr H E Merritt note 3 Director of Tank Design at Woolwich Arsenal based on the combat witnessed in Poland and France These new specifications for the A22 or Infantry Tank Mark IV were given to Vauxhall in June 1940 15 With a German invasion of Britain looking imminent and the loss of a substantial amount of military vehicles in the evacuation from France the War Office specified that the A22 had to enter production within a year By July 1940 the design was completed and by December of that year the first prototypes were completed in June 1941 almost exactly a year as specified the first Churchill tanks began rolling off the production line A leaflet from the manufacturer was added to the User Handbook which also described known faults with work arounds and what was being done to correct the problem It said Fighting vehicles are urgently required and instructions have been received to proceed with the vehicle as it is rather than hold up production All those things which we know are not as they should be will be put right Harold Drew of Vauxhall achieved miracles with the Churchill and its Merrit Brown Tank Gearbox produced by David Brown Limited a brilliant design that went into production off the drawing board without adequate prototype testing and had the most disastrous teething troubles according to Robotham citation needed but British tanks were under powered under gunned and unreliable At the Tank Board level the Director of Artillery was still extolling the merits of the 2 pounder and this gun was still fitted to every British tank until March 1942 note 4 In a 1942 exercise one tank had to have its gearbox changed five times 16 Because of its hasty development there had been little testing and the Churchill was plagued with mechanical faults Most apparent was that the Churchill s engine was underpowered unreliable and difficult to access for servicing Another serious shortcoming was the tank s inadequate citation needed armament the 2 pounder 40 mm gun which was improved by the addition of a 3 inch howitzer in the hull to deliver a HE shell albeit not on a howitzer s usual high trajectory citation needed Production of a turret to carry the QF 6 pounder gun began in 1941 but lack of supplies of the plate used in an all welded design led to an alternative cast turret also being produced These formed the distinction between Mark III and Mark IV 17 In August 1942 the Churchill was used offensively for the first time in the Dieppe Raid 18 The poor speed of the Churchill nearly caused production to be ceased in favour of the forthcoming Cromwell tank it was saved by the successful use of the Mk III at the Second Battle of El Alamein in October 1942 citation needed The second major improved Churchill the Mk VII was first used in the Battle of Normandy in 1944 The Mk VII improved on the already heavy armour of the Churchill with a wider chassis and the British 75 mm gun which had been introduced on the Mk VI It was primarily this variant the A22F which served through the remainder of war It was re designated A42 in 1945 The Churchill was a versatile project and was used in numerous specialist roles Design Edit nbsp Churchill tanks of 9th Royal Tank Regiment during an exercise at Tilshead on Salisbury Plain 31 January 1942 Front tank is a Churchill MK 1The hull was made up of simple flat plates which were bolted together in earlier models and were welded in later models The hull was split into four compartments the driver s position at the front then the fighting compartment including the turret the engine compartment and the gearbox compartment 19 The suspension was fitted under the two large panniers on either side of the hull the track running over the top There were eleven bogies either side each carrying two 10 inch wheels 20 Only nine of the bogies normally took the vehicle weight the front coming into play when the vehicle nosed into the ground or against an obstacle the rear acting in part as a track tensioner Due to the number of wheels the tank could survive losing several without much in the way of adverse effects as well as traversing steeper terrain obstacles As the tracks ran around the panniers escape hatches in the side could be incorporated into the design These were retained throughout the revisions of the Churchill and were of particular use when the Churchill was adopted as the AVRE The Bedford Vehicles engine was effectively two engines in horizontally opposed configuration flat twelve on a common crankshaft There were four Solex carburettors each on a separate manifold that fed three cylinders formed as a single cylinder head The elements of the engine and ancillary components were laid out so they could be reached for maintenance through the engine deck covers Air for the engine was drawn from the fighting compartment through air cleaners Cooling air was drawn into the engine compartment through louvres on the sides across the radiators and through the engine compartment by a fan driven by the clutch This fan blew the air over the gearbox and out the rear of the hull By opening a flap between the fighting compartment and the engine compartment this airflow could be used to remove fumes produced by firing the armament The 1 296 cu in 21 238 L capacity engine was rated at 350 bhp 260 kW at 2 000 rpm delivering 960 lb ft 1 300 N m torque over an engine speed range from 800 to 1 600 rpm The gearbox featured a regenerative steering system that was controlled by a tiller bar instead of the more commonplace brake levers or as with the German Tiger I heavy tank a steering wheel The tiller was connected with servo assistance hydraulically to the steering brakes The Churchill was also the first tank to utilise the Merritt Brown triple differential gearbox which allowed the tank to be steered by changing the relative speeds of the two tracks this effect became more pronounced with each lower gear ultimately allowing the tank to perform a neutral turn when no gear was engaged where it could fully pivot within its own length and thus rotate in place There were final reduction gears of the planetary type in the driving wheels 21 Although capable of 17 mph 27 km h the noise at that speed was so great that the Churchill was limited to 10 to 12 mph 16 to 19 km h by not using the highest gear 22 The first turrets were of cast construction and were rounded in shape providing sufficient space to accommodate the relatively small 2 pounder gun To fulfil its role as an infantry support vehicle the first models were equipped with a 3 inch howitzer in the hull 23 in a layout very similar to the French Char B1 This enabled the tank to deliver a useful high explosive capability while retaining the anti tank capabilities of the 2 pounder However like other multi gun tanks it was limited by a poor fire arc the track horns limiting traverse and elevation of only 9 Despite the length of the gun the muzzle velocity was only 600 ft s 180 m s note 5 22 The Mark IVA retrospectively the Churchill Mk II dispensed with the howitzer there had been only enough guns to equip 300 tanks 22 and replaced it with a bow machine gun 23 and on the Mk III the 2 pounder was replaced with the 6 pounder significantly increasing the tank s anti tank capabilities The tank underwent field modification in North Africa with several Churchills being fitted with the 75 mm gun of destroyed M4 Shermans These NA75 variants were used in Italy The use of the 75 mm increased the effectiveness of the tank as it was a generally superior weapon to the 6 pounder possessing similar anti tank capabilities while also being considerably more effective when used in infantry support roles 24 Churchills made use of the Vickers Tank Periscope MK IV In the Mark VII the driver had two periscopes as well as a vision port in the hull front that could be opened The hull gunner had a single periscope as well as the sighting telescope on the BESA machine gun mounting In the turret the gunner and loader each had single periscope and the commander had two fitted in his hatch cupola The armour on the Churchill often considered its most important feature was originally specified to a minimum of 16 millimetres 0 63 in and a maximum of 102 millimetres 4 0 in this was increased with the Mk VII to a range from 25 millimetres 0 98 in to 152 millimetres 6 0 in Though this armour was considerably thicker than its rivals including the German Tiger I tank but not the Tiger II it was not sloped reducing its effectiveness Earlier models were given extra armour by the expedient of welding on extra plates nbsp Close up of road wheels and tracks of Churchill Mk VIIOn the Mark VII the hull front armour was made up of a lower angled piece of 5 5 in 140 mm a nearly horizontal 2 25 in 57 mm plate and a vertical 6 inch plate The hull sides were for the most part 3 75 in 95 mm The rear was 2 in 51 mm and the hull top 0 525 in 13 3 mm The turret of the Mark VII was 6 in 150 mm to the front and 3 75 in 95 mm for the other sides The turret roof was 0 79 20 mm thick Plate was specified as IT 80 the cast sections as IT 90 25 The A22F also known as Heavy Churchill was a major revision of the design The most significant part was the use of welding instead of riveted construction Welding had been considered earlier for the Churchill but until its future was assured this was no more than testing techniques and hulls at the firing ranges What welding reduced in the overall weight estimates were around 4 the thicker armour of the A22F made up for Welding also required fewer man hours in construction The hull doors changed from square to round which reduced stresses A new turret went with the new hull The sides which included a flared base to protect the turret ring were a single casting while the roof which did not need to be so thick was a plate fitted to the top 26 Since the engines on the Churchill were never upgraded the tank became increasingly slow as additional armour and armament was equipped and weight increased while the Mk I weighed 40 long tons 41 000 kg and the Mk III weighed 39 long tons 39 630 kg the Mk VII weighed 40 long tons 40 640 kg This caused a reduction in the tanks maximum speed from its original 26 km h 16 mph down to 20 4 km h 12 7 mph clarification needed Another problem was the tank s relatively small turret that prevented the use of powerful weapons definitive versions of the tank were armed with either the QF 6 pounder or the derivative QF 75 mm gun The 6 pounder was effective against armoured vehicles but less so against other targets the 75 mm was a better all round weapon but lacked in effectiveness against armour Although the Churchills with their 6 pounders could outgun many contemporary German medium tanks like the Panzer IV with the short barrel 75 mm gun and the Panzer III armed with the 50 mm gun and the thick armour of all Churchill models could usually withstand several hits from any German anti tank gun in the later years of the war the German Panther tank had a 75 mm high velocity cannon as its main armament along with increased protection against which the Churchills own guns often lacked sufficient armour penetration to fight back effectively The Churchill had many variations including many specialised modifications The most significant change to the Churchill was that it was up gunned from 2 pounder to 6 pounder and then 75 mm guns over the course of the war By the war s end the late model Churchill Mk VII had exceptional amounts of armour considerably more than the German Tiger tank However the firepower weakness was never fully addressed The Mark VII turret that was designed for the 75 mm gun was of composite construction cast with top and bottom plates welded into position 15 While it had weaknesses the Churchill could cross terrain obstacles that most other tanks of its era could not 27 This capacity frequently proved useful especially during the fighting in Normandy One action in Normandy where the tank s ability to surmount obstacles was found to be of value was the capture of Hill 309 on 30 31 July 1944 Operation Bluecoat conducted by VIII Corps 28 Production EditMain article British armoured fighting vehicle production during World War II The Churchill tank was produced with Vauxhall as the design parent Subcontracted work on some tanks was provided by Whessoe Foundry amp Engineering Metropolitan Cammell Carriage amp Wagon Babcock amp Wilcox Newton Chambers amp Company and the Gloucester Railway Carriage amp Wagon Company the latter two produced some complete vehicles Other contractors produced hulls and turrets which went to Vauxhall Charles Roberts amp Co and Dennis Brothers for final assembly 29 Churchill tank production citation needed Model Years ProductionChurchill I 1941 303Churchill II 1941 42 1 127Churchill III late 1942 675 or 692 30 Churchill IV 1943 together with Churchill V 1 622Churchill V 1943 together with Churchill IV 241Churchill VI early 1944 improved Churchill IV 200Churchill VII 1944 together with Churchill VIII 1 400Churchill VIII 1944 together with Churchill VII 200In March and April 1942 Vauxhall stopped producing new tanks Together with Broom amp Wade at High Wycombe they started rebuilding earlier tanks about 700 of the first 1 000 built were included in this scheme The reworked tanks got an R as a suffix to their WD number Changes to the hull air intakes and the full length mudguards were the most obvious changes 31 Turrets for the earliest Marks were single piece castings One thousand were supplied from the United States 600 complete from General Steel and 400 from American Steel Foundries that were finished by other companies before shipping to UK 32 Service history EditDieppe Raid Edit nbsp Churchill tanks on the Dieppe beach The Y shaped pipes on the rear decking are exhaust pipe extensions to allow deep wading The Churchill first saw combat on 19 August 1942 in the Dieppe Raid in France The Dieppe raid was planned to temporarily take control of the French port of Dieppe using a strong force of about 6 000 troops mostly drawn from inexperienced Canadian units The operation codenamed Jubilee would test the feasibility of opposed landings Nearly 60 Churchill tanks from the 14th Army Tank Regiment The Calgary Regiment Tank note 6 were allocated to support the infantry and commandos they would be put ashore by Landing Craft Tank vessels along with the supporting engineers Some problems were anticipated and allowed for waterproofing of the hulls canvas carpets Bobbin to aid the tanks crossing the short stretch of shingle beach engineer teams to demolish road blocks and a few of the tanks were fitted with flame throwers The tanks a mix of Mark I with hull howitzers Mark II three with flamethrowers and Mark III some with Bobbin were expected to enter the town and reach a nearby airfield before retiring back to the beach to be taken off by the LCTs Half of the tank force would be held in reserve offshore 34 In the event the German defences were stronger than expected The beach was chert which included larger stones than the anticipated shingle according to history professor Hugh Henry the German defenders had previously considered it impassable to tanks 35 Only the 30 Churchills in the first two waves of 10 LCTs were landed on the beach under heavy fire the latter two waves were turned away One Churchill was trapped in its LCT by shellfire Of the 29 remaining eight Mark I IIs three Oke flamethrower tanks and 18 Mark IIIs two sank en route to shore and 11 were immobilized on the beach due to a combination of the chert shingle and indirect fire Only 15 would get off the beach and over the sea wall onto the Dieppe promenade Although these tanks were effective in engaging the defenders in the town s buildings their further progress was blocked by concrete defences the engineer demolition teams killed or pinned on the beach had not been able to accompany the tanks Ten of these Churchills were able to return to the beach once the withdrawal had been signalled but they could not be evacuated According to Henry no Churchills were penetrated by German anti tank fire while still manned 36 These surviving tank crews fought to cover the withdrawal of the infantry from the beach and almost all were captured with their vehicles having exhausted their main gun ammunition The tank regiment s commanding officer Lieutenant Colonel Johnny Andrews was among those killed in action Nearly 70 of the Canadians were killed injured or captured and none of the raid s objectives were met other than the secret raid on the radar station on a headland 37 North Africa Edit nbsp Churchill Mark III tanks of Kingforce during the Second Battle of El AlameinTwo Mark II had been sent to North Africa for trials and they were joined by six Mk III Churchills with the 6 pounder to form the Special Tank Squadron commanded by Major Norris King They saw action in the Second Battle of El Alamein in October 1942 This detachment called Kingforce supported the attack of 7th Motor Brigade first with three tanks at Kidney Ridge where one was hit repeatedly by anti tank gun fire including friendly fire from a British gun and another took a lot of punishment then the remaining five at Tell el Aqqaqir 38 The Churchills were fired on many times by Italian and German anti tank guns but only one was knocked out and partially caught on fire 39 One tank was said to have been hit up to 80 times 40 41 Kingforce formed to test whether the Churchills could operate in Africa was considered too slow to participate in the chase after the retreating Axis sent back to Alexandria and disbanded after El Alamein 38 The 25th Army Tank Brigade of three regiments was sent to Africa and went into action in February 1943 during the Tunisian campaign note 7 It was followed by 21st Army Tank Brigade Churchill tanks took part in containing the German offensive of Operation Ochsenkopf in February March 1943 At a place called Steamroller Farm two Churchill Mk III tanks of 51 RTR got ahead of their squadron They came across an entire German transport column which they ambushed and completely shot up before they rejoined The result was the destruction of two 88 mm two 75 mm and two 50 mm four lesser anti tank guns 25 wheeled vehicles two 3 inch mortars two Panzer III tanks and infliction of nearly 200 casualties 42 A Churchill tank in a hull down defensive position made a particular contribution to Allied success In one encounter on 21 April 1943 during the start of the Battle of Longstop Hill a Churchill tank of the 48th Royal Tank Regiment got the better of a German Tiger I heavy tank A 6 pounder shot from the Churchill lodged between the Tiger s turret and turret ring jamming the turret and injuring the German crew They abandoned the Tiger which was subsequently captured by the British Known as Tiger 131 this was the first Tiger captured by the Western Allies and was particularly useful for intelligence Tiger 131 has since been restored to full working condition and is now on display at The Tank Museum in Dorset UK As of early 2021 it is the only working Tiger tank in the world 43 Italy Edit nbsp North Irish Horse Churchill advancing towards Florence 23 July 1944Churchill tanks were not initially used in the Italian mainland in 1943 There were six regiments with Churchills in Tunisia these may have been kept out because Montgomery preferred the Sherman or because their 6 pdr guns were not considered suitable for the fighting in Italy 44 Churchills did land in Italy in April May 1944 with 75mm gun armed Churchills arriving later 44 As the mainstay of the Tank Brigades which operated in support of the infantry Churchill units were in operation more often than other tank units 45 The Churchill NA75 s Churchill Mark IVs converted to carry the US 75 mm gun were used in Italy 46 As the Churchill proved to be a better gun platform than the Sherman the effective range of the 75 mm was increased 47 North West Europe Edit Churchills saw widespread action in Normandy during the Battle of Hill 112 and Operation Bluecoat as well as subsequent operations in the Low Countries and into Germany such as the fighting in the Reichswald during Operation Veritable The Churchill was able to cross the muddy ground and force through the forests of the Reichswald a contemporary report expressed the belief that no other tank could have managed the same conditions 48 Burma and India Edit A single Churchill possibly a Mk V was trialled in Burma in 1945 It was operated by the 3rd Dragoon Guards Carabiniers from the end of April 1945 for about a month Although it proved impossible to bring the Churchill into action on approach marches the tank proved at least the equal to the M3 Lee then in service 49 The 254th Indian Tank Brigade returned to India from Burma arriving at Ahmednagar during July 1945 The brigade immediately began conversion from the Lee to the Churchill the intention being for the newly equipped brigade to return to operations in October 1945 At the time it was assumed that the war against Japan would continue and that the new battleground would be Malaya Although a small number of tanks were delivered and some training undertaken the end of the war against Japan meant that the conversion was not completed At the end of September the 254th Indian Tank Brigade was reassigned and posted away from Ahmednagar All the Churchills delivered up to that point were returned to the Ordnance Depot at Kirkee Khadki by the end of November early December 1945 Of the three regiments battalions involved the 3rd Dragoon Guards accompanied the 254th Brigade when posted away while the 149th Regiment Royal Armoured Corps and the 150th Regiment Royal Armoured Corps were eventually disbanded at Ahmednagar on 28 February 1946 the majority of personnel already having been repatriated to the United Kingdom or posted to other units 50 Other theatres Edit In mid 1944 at the request of Britain s War Office the Churchill was tested by the Australian Army along with the M4 Sherman The results were to be used to determine any modifications required for use in the tropics Matildas were used as a reference point in the tests at Madang New Guinea The Churchill was found to be overall superior to the other tanks for jungle warfare 51 52 It was not used in the Pacific War only 46 of the 510 Churchills ordered by Australia were delivered by the end of the war and the remainder of the order was cancelled citation needed Korean War and after Edit During the Korean War the United Kingdom deployed 20 Churchill tanks from the C Company 7th Royal Tank Regiment and arrived on the Korean Peninsula along with its first sent troops in November 1950 Most of these tanks were Mk VII A42 Crocodile flame throwing tanks despite being a flame thrower they were used like a regular tank In addition the Assault Vehicle Royal Engineers AVRE Armoured Recovery Vehicle ARV and Bridgelayers variants were brought together 53 In action against the Chinese they mostly fought as gun tanks for example in the Third Battle of Seoul To restore the 1st Battalion Royal Northumberland Fusiliers position during the defence of Seoul Brigadier Thomas Brodie of the 29th Infantry Brigade sent four Churchill tanks as reinforcement their contributions to the battle were widely praised by British and American historians 54 The Churchill tank was briefly operated in 1950 to 1951 and withdrew in October 1951 from Korea All Churchills retired from the British Army in 1952 53 USSR Edit nbsp A Soviet Churchill Mk IV passes a knocked out German Sd Kfz 232 8 Rad armoured car at the fourth battle of Kharkov in 1943You can help expand this section with text translated from the corresponding article in Russian May 2021 Click show for important translation instructions View a machine translated version of the Russian article Machine translation like DeepL or Google Translate is a useful starting point for translations but translators must revise errors as necessary and confirm that the translation is accurate rather than simply copy pasting machine translated text into the English Wikipedia Consider adding a topic to this template there are already 2 900 articles in the main category and specifying topic will aid in categorization Do not translate text that appears unreliable or low quality If possible verify the text with references provided in the foreign language article You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at ru Cherchill tank see its history for attribution You should also add the template Translated ru Cherchill tank to the talk page For more guidance see Wikipedia Translation nbsp A captured Soviet Churchill Mk IV 1943The Soviet Union was sent 301 Churchill tanks 45 Mk II 151 Mk III and 105 Mk IV as part of the Lend Lease programme 55 43 of them 19 Mk II and 24 Mk III were lost en route on the Arctic Convoys 55 Delivery of the first 25 units took place in May 1942 56 but adoption by the Red Army was delayed because of the 30 that were sent by June 1942 20 had been lost in shipping 56 The Churchill was not very popular in Soviet service 56 Soviet operators disliked the 2 pdr gun of the Mk II version also used by Matildas and Valentines shipped to the USSR 56 and the tank was considered sufficient by inspectors who warned that it was unrefined in terms of both design and production and would require constant maintenance in the field 56 Like Soviet heavy tanks they were assigned to separate breakthrough tank regiments tasked with infantry support 57 In 1942 1943 Churchills were used in the Battle of Stalingrad 47th and 48th regiments of heavy tanks 42 Churchills In 1943 the Soviet 5th Guards Tank Army used Churchills in the Battle of Prokhorovka 15th and 36th regiments of heavy tanks 42 Churchills during the Battle of Kursk and in the Fourth Battle of Kharkov It was also used in other battles until 1944 82nd regiment of heavy tanks 57 The Churchills were also employed at the Finnish front and they took part on the capture of Viipuri 1944 The Finnish forces reported to have destroyed three heavy tanks of previously unknown type which after the war were recognized as Churchill III tanks Ireland Edit The Irish Army took delivery of three Churchill Mk VI tanks in 1948 and a fourth in 1949 These were rented from the British War Office as trials vehicles until 1954 when they were purchased outright This purchase was despite the fact that the supply and transport corps workshops which maintained them had reported that spares had all but run out 58 Experiments were carried out involving replacing the existing Bedford engine with a Rolls Royce Merlin engine salvaged from an Irish Air Corps Supermarine Seafire aircraft on one tank The experiment was a success but not followed up on the other tanks although the reasons are not recorded 58 By 1967 only one Churchill remained serviceable and by 1969 all were retired One remains preserved in the Curragh Camp Variants Edit nbsp Churchill Mark I with hull mounted 3 inch howitzer in exercises on Salisbury Plain January 1942 nbsp Churchill Mark III looking noticeably different from the Mark I with a new turret and gun and new side skirtings for the tracks nbsp Churchill Mark VI nbsp Churchill Mark VII nbsp Churchill Mark VIII with 95 mm howitzerSee also list of specialist Churchill tank variants During the course of the war as well as new production older vehicles were reworked to bring them up to later standard For example 2 pdr turrets were replaced with the 6 pdr turret and the improved commander s cupola with eight periscopes introduced after the first Mark VII was applied to some earlier marks as well Nearly 3 100 Churchills of all marks were rebuilt 59 Early tanks were produced before the Churchill name was attached and were retroactively known as Churchill Mark I etc Churchill tank developmentIIIOKEIIcsIII IVAVRE75mmVIVARKXXIIX LT VIICrocodileVIIIAVREThe following Churchill variants saw primary use as battle tanks Churchill I 303 produced Equipped with a 40 mm Ordnance QF 2 pounder gun in the turret with 150 rounds and a coaxial Besa machine gun There was an Ordnance QF 3 inch howitzer in the hull with 58 rounds for use against infantry It was a tank that was noted for poor mechanical reliability It was used alongside Mark IIs and IIIs with Canadian forces on the Dieppe Raid and in Tunisia some were still in use late in the war in Italy on the Gothic Line 60 Churchill Mk II 1 127 produced Replaced the hull howitzer with another machine gun to reduce cost and complexity Sometimes referred to as Churchill Ia Churchill Mk IICS Close support Placed the 2 pounder gun in the hull and the howitzer in the turret available in very limited numbers Sometimes called the Churchill II Not used in combat 59 Churchill Mk III 675 produced The III was the first major armament overhaul of the series eliminating the hull howitzer and equipping the tank with a more powerful Ordnance QF 6 pounder gun with 84 rounds It had a new welded cleaner squarish turret from Babcock amp Wilcox Ltd unlike earlier versions The availability of rolled armour plate limited the number that could be built leading to the Mark IV The first Mark to have catwalks over the upper track runs to protect the tracks examples later upgunned with the QF 75 mm gun are known as the Churchill III Churchill Mk IV 1 622 produced The IV the most numerous Churchill produced was virtually identical to the III the largest change being a return to the cheaper cast turret keeping the welded turret s clean squarish shape A tank telephone was fitted to the rear of the tank for communication with infantry In earlier models turrets using the 6 pounder Mark V were fitted with a counterweight Two hundred and ten were refitted in North Africa with US 75 mm guns taken from battle damaged M4 Sherman tanks the Churchill NA75 s while others were up gunned with British Ordnance QF 75 mm guns creating the Mark IV 75 46 The QF 75 mm had a muzzle brake unlike the 6 pounder Churchill Mk V 241 produced A Churchill equipped with a close support Ordnance QF 95 mm howitzer with 47 rounds in place of the main gun in a cast turret The gun could fire smoke HE or HEAT round with a maximum range of 6 800 yd 6 200 m 61 Produced from the Mark IV production run at about 1 in 10 61 The turret was similar to the Marks IV VI turrets with a slightly different opening for the gun in the turret front face Churchill Mk VI 200 produced Along with several minor improvements such as an additional collar at the turret base protecting the turret ring it was produced as standard with the 75 mm Mark V gun Few were built due to the impending release of the VII and concurrent up gunning of the Marks III IV Churchill Mk VII A22F 1 600 produced together with Mark VIII The second big redesign the VII used the 75mm gun was wider and carried much more armour 50 per cent thicker at the front than a Tiger I giving it the ability to withstand massive amounts of punishment 62 It is sometimes called the Heavy Churchill and was given the specification number A42 in 1945 This version of the Churchill first saw service in the Battle of Normandy and equipped three Royal Armoured Corps regiments in western Europe one in Italy and with 7th Royal Tank Regiment in Korea The Mark VII was designed to be able to be converted into the Crocodile flame throwing variant without major modification 62 Churchill Mk VIII 1 600 produced together with Mark VII A Churchill VII with a 95 mm howitzer and 47 rounds in a slightly different turret Churchill Mk IX Churchill III IV upgraded with extra armour added to hull and turret along with gearbox and suspension modifications If the original turret was retained without added armour it was called LT Light Turret Churchill Mk X The same improvements as for the IX applied to a Mk VI Churchill Mk XI The same improvements as for the IX applied to a MkV CS Does not appear to have been built 63 Churchill NA75 210 produced 46 Churchill IVs with 6 pounder guns replaced under Operation Whitehot 47 by US 75 mm guns and mantlets from destroyed or scrapped Sherman tanks fitted to Churchill IV cast turrets Their performance was virtually identical to the VI They were known as NA75 North Africa 75 where the first conversions took place after 48 Shermans with new guns had been disabled by mines 64 Some Mark IIIs were also modified using Mark IV turrets To fit the Sherman mantlet required cutting away the front of the Churchill turret before it was welded in place then the mantlet slot had to be cut away to give sufficient elevation The Sherman 75 mm gun was designed for a left hand loader and the Churchill in common with British practice had a right hand loader The gun was turned upside down and the firing controls adapted 65 The conversion of about 200 tanks was carried out between March and June 1944 and the conversion project earned the officer in charge Capt Percy Morrell an MBE and a promotion Specialist vehicles Edit Main articles List of specialist Churchill tank variants and Hobart s Funnies In addition to the tanks several specialist Churchill variants were developed chiefly for combat engineering roles nbsp AVRE 230mm Petard Mortar and its ammunition projectile standing on its flat nose with tail facing up at right The Churchill Assault Vehicle Royal Engineers was a Churchill III or IV armed with a spigot mortar demolition weapon 66 which replaced the 6 pounder gun The effective range of the 230mm high explosive flying dustbin round was only around 80 yards of 230 yard maximum range Crew was increased to six to accommodate a demolition NCO in addition to driver commander gunner wireless operator and co driver machine gunner As well as the mortar ammunition it carried General Wade 26 lb explosive charge and Beehive charges of up to 75 lbs of explosive Both types of charge had to be set manually but could be detonated from the relative safety of the AVRE interior The AVRE could be fitted to carry different combat engineering equipment The Churchill Crocodile was a flamethrower tank which replaced the hull machine gun with a flamethrower and towed an armoured fuel trailer Churchills were converted to Kangaroo armoured personnel carriers by removing the turret from Churchills Further development Edit Main article Black Prince tank nbsp Side view of the Black Prince probably taken near the end of the war The Black Prince General Staff specification A43 was a development of the Churchill design In 1943 an attempt was made to produce a Churchill with the same 17 pounder that the Sherman Firefly a British modification of the American M4 Sherman on a Churchill chassis and turret It was known that insufficient numbers of the 17 pounder armed Cruiser Mk VIII Challenger were going to be produced in time for the invasion of Europe and work was only starting on the Centurion cruiser design Due to the wider turret ring required Vauxhall had to redesign the hull though it used as much of the Churchill Mark VII as possible including retaining the Bedford Flat 12 engine which led to the heavier Black Prince being consequently much slower going from 15 MPH 24 km h to 10 5 MPH onroad and 7 5 mph offroad This resulted in the Tank Infantry Black Prince A43 Six prototypes were built and delivered in May 1945 just as the war in Europe was ending The test programme was completed but the project was cancelled due to the success of the new and less complicated Centurion Mark I which offered the same armament and frontal armour was faster and more manoeuvrable and had just entered production 67 There are 2 surviving Black Princes as of today The one that is fully intact is No 4 of the prototypes and is displayed at The Tank Museum in Bovington The second surviving Black Prince is only a hull recovered from Salisbury plain in the 80s as part of the Tony Budge collection It is now held as of today by the Rex and Rod Cadman collection After the Black Prince no more Churchills were developed as the army had shifted in favour of the above mentioned Centurion which was mainly claimed as the first Main battle tank and also the British army was going through a change of doctrine meaning large infantry tanks to support men were no longer needed on the front Operators Edit nbsp Australia retired replaced with the Centurion main battle tank nbsp Canada retired replaced with the Centurion nbsp India retired nbsp Ireland retired in 1969 replaced with the Comet cruiser tank nbsp Poland Polish Armed Forces in the West retired in 1947 without replacement nbsp United Kingdom retired from British Army service in 1952 replaced by the Centurion nbsp Soviet Union Lend Lease retired replaced with IS 3 and T 10 heavy tanks nbsp Kingdom of Iraq retired replaced with the Centurion 68 Surviving vehicles Edit nbsp The Churchill Trust s Mark IV participating in The Tank Museum s Tankfest 2012 69 A number of Churchills still exist as gate guardians or war memorials while many examples reside in museums Jacques Littlefield s Military Vehicle Technology Foundation in California United States acquired a Flail FV3902 Toad in its collection in 2008 after it was restored to full working order by RR Services in Kent England it was subsequently sold at auction and acquired by the Australian Armour and Artillery Museum 70 71 There are two Churchill Mark IVs at Normandy in France one is residing at Lion sur Mer while the other is located at Graye sur Mer 72 The Churchill Trust is a project that aims to restore existing Churchills to their original condition and working order So far a Mark III AVRE with applique armour 73 salvaged from a firing range and a post war Mark IV Twin ARK have been restored to running condition 74 The specialist equipment was removed and turrets were added converting both tanks into their original variants As of 2016 update the project was in the process of restoring a Mark VII AVRE recovered from a range in northern England 75 76 The Tank Museum in Bovington Camp Dorset England currently has four Churchills in its collection a Mark VII in The Tank Story Hall as a static exhibit a working Mark III AVRE as a static display currently located in the Museum s Conservation Hall a Mark VI returned to the Museum after the closure of the Isle of Wight Military History Museum also currently located in the Museum s Conservation Hall 77 and a Mark II with cosmetic alterations to make it appear as a Mark I as an outdoor static display 78 72 The museum s Mark VII was the last Mark VII produced it went directly to the museum from the factory and in terms of mileage is virtually brand new 62 The Mark III AVRE was salvaged from a firing range marker as a complete wreck It was restored to running order by Bob Grundy of Wigan and his Tracked Armour Group in August 1988 79 72 The Museum also has the only surviving Black Prince prototype 80 The Churchill Trust and the Tank Museum are not affiliated or associated with one another in any way their tanks are different and owned separately and the only common ground between both parties is that the Churchill Trust sometimes sends its tanks to participate in the Tank Museum s annual Tankfest event Additionally the Churchill Trust s tanks were all specialist vehicles but were converted back into the standard turreted heavy tank variants during restoration In 2018 the two parties concluded a long term agreement that saw the Churchill Trust loan all three of its Churchills to the Tank Museum with the III becoming a permanent part of the Museum s fleet of running vehicles and the IV and VII being included in the Museum s Second World War exhibitions 81 The Churchill III was restored in time for Tankfest 2019 and ran at the event 82 The Cavalry Tank Museum Ahmednagar Maharashtra India has one Churchill Mark VII a Mark X uparmoured Mk VI chassis Mk VII turret 75mm gun Mk VII driver s visor and MG mount a Churchill bridgelayer and a Churchill ARV 83 A Mk VII Churchill Tank stands at the side of the Marine Highway Carrickfergus Co Antrim The restored vehicle was a gift to the Borough from the Trustees of the North Irish Horse Regimental Association See also EditTanks in the British Army Matilda II Excelsior tank T14 Heavy Tank M6 heavy tank Kliment Voroshilov tank Tiger I Tiger IINotes Edit TOAD Flail in reserve for British Army until mid 1960s It was thought the muzzle might catch in the ground and a shortened version would have poor ballistics Who was also responsible for the triple differential design of the Merritt Brown gearbox used in the Churchill introduction of the 6 pounder gun into British use was delayed by the need to re arm after the loss of equipment and production did not start until October 1941 and some designs in production could not take the larger gun The howitzer could fire smoke or HE but only smoke was carried as the range of the HE round was short and firing smoke was the purpose of the close support CS gun They replaced the 48th Royal Tank Regiment 33 North Irish Horse 51st Royal Tank Regiment and 142nd Regiment Royal Armoured CorpsCitations Edit Tank Museum Bovington Tank Infantry Mark IV A22F Churchill VII Churchill Infantry Tank by David Fletcher page 31 Churchill Infantry Tank by David Fletcher page 8 Britain s Struggle To Build Effective Tanks During The Second World War Imperial War Museums Retrieved 4 March 2019 Churchill Tank 1983 p ix p 101 Victor Sims Churchill the Great The Best Stories The Daily Mirror Newspapers Ltd 1962 a b c Fletcher 2019 p 4 a b c d Fletcher 2019 p 5 Fletcher 2019 pp 5 6 Fletcher p 21 Perrett p 4 Fletcher 2019 p 7 Fletcher pp 21 58 a b Fletcher David 1983 1944 Churchill Tank Reprint of original WW2 operating manuals ed His Majesty s Stationery Office The Tank Museum pp vii 9 3 29 19 ISBN 978 0 11 290404 5 a b Fabrication of the new Churchill Tank MK VII Robotham 1970 pp 139 144 Fletcher p 59 Fletcher 2019 p 19 White 1983 pp 7 8 White 1983 p 8 David Fletcher Churchill Infantry Tank Osprey Publishing ISBN 978 1472837349 2019 p 11 a b c Fletcher 2019 p 12 a b White 1983 p 9 Bird Lorrin Rexford Livingston Robert D 2001 WWII Ballistics Armor and Gunnery Overmatch Press pp 115 120 Churchill vehicle history and specifications Fletcher 1993 The Tank Book Dorling Kindersley 2017 p 94 ISBN 978 0 2412 5031 0 Perrett pp 34 35 Armour Welding On The Churchill Tank Mark VII Archived from the original on 26 July 2011 Retrieved 6 March 2010 Fletcher 2019 p 19 Fletcher 2019 pp 24 25 Fletcher 2019 p 14 Fletcher 2019 p 20 Fletcher 2019 pp 20 21 Henry Hugh G 1995 The Calgary Tanks at Dieppe Canadian Military History 4 1 Henry p 70 Perrett pp 15 16 a b Fletcher 2019 p 24 Photo E18830 in the Imperial War Museum collection shows a knocked out Churchill Mk III among abandoned Italian M13 40 tanks at El Alamein 2 November 1942 KingForce Archived from the original on 21 August 2010 Perrett p 17 War Monthly No 34 45 War Monthly Publications 1976 The Capture of Tiger 131 PDF Tank Times p 3 February 2012 archived from the original PDF on 6 October 2014 a b Fletcher 2019 p 29 Perrett p 11 a b c Fletcher 2017 pp 172 3 a b Operation Whitehot Creation of the Churchill Mark Na75 The North Irish Horse and Steeds of Steel Archived from the original on 22 February 2011 Veale Lt Col P N Report on 34 Armoured Brigade Operations The Reichswald Forest Phase 8 to 17 February 1945 royaltankregiment com retrieved 6 May 2016 Churchills in Burma and India Performance of the Churchill Tank in Burma 1945 by Steve Rothwell Retrieved 11 April 2018 Churchills in Burma and India by Steve Rothwell Retrieved 11 April 2018 The Churchill in Australian Service by Micheal Grieve Churchills shipped to Australia archived from the original on 26 April 2012 a b Bak Dongchan 2021 Korean War Weapons of the United Nations PDF in Korean Republic of Korea Ministry of Defense Institute for Military History pp 140 143 ISBN 979 1155980798 Farrar Hockley Anthony 1990 Official History The British Part in the Korean War Volume I London HMSO p 389 ISBN 0116309539 a b Zaloga 2017 p 46 a b c d e Zaloga 2017 p 24 a b Zaloga 2017 p 25 a b Martin Karl 2002 Irish Army vehicles transport and armour since 1922 p 58 ISBN 978 0954341305 a b AFV Profile New Vanguard p6 a b Fletcher 2019 p 28 a b c Tank Infantry Mark IV A22F Churchill VII E1949 339 tankmuseum org The Tank Museum Retrieved 5 May 2016 Fletcher 2019 p 44 Fletcher 1993 pp 25 26 Perrett p 9 Armoured Archives AVRE 230MM Fact Checking YouTube Archived from the original on 7 July 2022 user generated source Chamberlain amp Ellis 1969 p 77 Rulers of Iraq and Saudi Arabia bury an old feud with big party in Baghdad Life 27 May 1957 The Churchill Trust at Bovington Tank Museum Facebook The Churchill Trust 22 August 2013 Retrieved 5 May 2016 The Churchill Mark IV at Bovington Tankfest 2012 RM Sotheby s FV3901 Churchill Toad Flail Tank The Littlefield Collection 2014 RM Sotheby s 13 November 2017 Retrieved 1 February 2019 FV3902 Churchill Toad Tank Encyclopedia 15 January 2017 Retrieved 1 February 2019 a b c Churchill AVRE armourinfocus co uk Armour in Focus Retrieved 8 May 2016 permanent dead link The Churchill Trust added 3 new photos Facebook The Churchill Trust 27 July 2014 Retrieved 5 May 2016 The Churchill Trust added 3 new photos Facebook The Churchill Trust 24 August 2014 Retrieved 5 May 2016 The Churchill Trust added 13 new photos Facebook The Churchill Trust 30 January 2016 Retrieved 5 May 2016 The Churchill Trust added 3 new photos Facebook The Churchill Trust 19 January 2016 Unique ID 1378 A22 Churchill Tank preservedtanks com preservedtanks com 2 November 2010 Archived from the original on 8 December 2019 Unique ID 1376 A22 Churchill Tank preservedtanks com preservedtanks com Retrieved 10 February 2019 Tank Infantry A22B Churchill Mark III AVRE E1988 88 tankmuseum org The Tank Museum Retrieved 5 May 2016 Unique ID 1954 A43 Black Prince Tank preservedtanks com preservedtanks com Retrieved 10 February 2019 Special Guest 3 Churchill Mk3 The Churchill Trust www tankmuseum org tankmuseum org Retrieved 22 May 2019 Tank Museum Star Churchill Mark III www tankmuseum org tankmuseum org Retrieved 22 May 2019 Mohit S on Flickr accessed April 2018 Chamberlain and Ellis 1971 p 20References EditChamberlain Peter Ellis Chris 1969 British and American Tanks of World War II Arco Publishing Chamberlain Peter Ellis Chris 1971 The Churchill Tank Arms amp Armour Press Chant Christopher 1997 An Illustrated Data Guide to Battle Tanks of World War II London Chelsea House Publications ISBN 978 1 85501 856 3 Delaforce Patrick 2006 Churchill s Secret Weapons the story of Hobart s Funnies Barnsley Pen amp Sword ISBN 978 1 84415 464 7 Fletcher David 1989 The Great Tank Scandal British Armour in the Second World War Part 1 HMSO ISBN 978 0 11 290460 1 Fletcher David 1993 The Universal Tank British Armour in the Second World War Part 2 London Her Majesty s Stationery Office for Royal Electrical amp Mechanical Engineers Museum ISBN 978 0 11 290534 9 Fletcher David 2017 British Battle Tanks British Made Tanks of World War II Oxford Osprey Publishing ISBN 978 1 4728 2003 7 Perrett Bryan 1993 Churchill Infantry Tank 1941 1945 New Vanguard No 4 illustrated by Peter Sarson and Mike Chappell Osprey Publishing ISBN 978 1 85532 297 4 Robotham William Arthur 1970 Silver Ghosts and Silver Dawn London Constable amp Robinson White B T 1983 Churchill B I T Mk IV AFV Profile No 1 Profile Publishing ISBN 978 0671060091 Chamberlain Peter Ellis Chris Churchill and Sherman Specials AFV Profile No 20 Profile Publishing Fletcher David 2019 Churchill Infantry Tank New Vanguard 272 illustrated by Henry Morshead Osprey Publishing ISBN 9781472837349 Zaloga Steven J 2017 Soviet Lend Lease Tanks of WWII New Vanguard 247 illustrated by Henry Morshead Osprey Publishing ISBN 9781472818133 External links Edit nbsp Wikimedia Commons has media related to Churchill tank Fabrication of the new Churchill Tank MK VII royaltankregiment com The Royal Tank Regiment Association Archived from the original on 26 July 2011 Retrieved 6 March 2010 The Churchill Tank Project aiming to restore a Mk III Mk IV and Mk VII Churchill Infantry Tank A 22 wwiiequipment com Archived from the original on 10 August 2011 Retrieved 24 April 2012 Armour in Focus A22 Henk of Holland OnWar specifications Churchill I Churchill IV Churchill VII WWII Vehicles Churchills in Soviet Union Churchill Heavy Infantry Tank in the Russian Battlefield Detailed vehicle description at 9th Battalion Royal Tank Regiment website Detailed history of the 9th Battalion using Churchills from introduction to war s end Memories of Frank Meredith Archived 17 May 2006 at the Wayback Machine 9th Battalion Driver Mechanic 1942 45 Churchills in Burma and India at The Burma Campaign web site Portals nbsp World War II nbsp United Kingdom Retrieved from https en wikipedia org w index php title Churchill tank amp oldid 1171395433, wikipedia, wiki, book, books, library,

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