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Claude Hilton Keith

Group Captain Claude Hilton Keith (21 October 1890 – 18 November 1946) was a British-Canadian aviator who was an early pioneer of air gunnery, playing a central role in the preparation of the Royal Air Force (RAF) for the Second World War. His work as Assistant Director of Armament Research and Development with responsibility for armament led to the establishment of the "Air Fighting Committee" in 1934. His career ended prematurely after championing the rights of RAF personnel posted in Canada.

Claude Hilton Keith
Born21 October 1890[1][2]
Qu'Appelle, Saskatchewan, Canada
Died18 November 1946(1946-11-18) (aged 56)[3]
Surrey, England
AllegianceUnited Kingdom
Service/branchRoyal Naval Air Service (1915–18)
Royal Air Force (1918–43)
Years of service1915–1943
RankGroup Captain
Commands heldRAF Central Gunnery School
Picton Gunnery School
President Aircrew Selection Board
RAF Marham
RAF Worthy Down
No. 6 Squadron RAF
Battles/warsFirst World War
Second World War

Early life edit

Claude H. Keith was born in Qu'Appelle, Saskatchewan, Canada in 1890 to English parents Hilton Keith and Ellen Mary Katharine Rogers. He was baptised in Cornwall in 1891 and was living with his grandparents in 1901 in London.[4] His father was an Indian Agent in the Touchwood Hills. He trained as an electrical engineer with Marconi's Wireless Telegraph Company, and was present at Dover in 1909 as Bleriot landed after completing the first air crossing of the English Channel. In 1910 he travelled to Fiji to establish three new radio stations.[5] In 1912 he made his first flight with Hubert Spencer in a dual control box kite.

Military career edit

Keith joined the Royal Naval Air Service in 1915[6] and qualified on seaplanes in 1916. As a probationary flight officer he was charged with "endangering one of His Majesty's aircraft" by looping the loop and a year later was teaching this as part of basic training. He became a Seaplane Group Navigational Officer, and after the RNAS was amalgamated with the Royal Flying Corps in 1918, was commissioned in the RAF and became a specialist in navigation and armament at the School of Naval Co-operation and Aerial Navigation where he drafted the syllabus for the RAF's first Long Range Navigation course before taking it himself.[6] He was subsequently attached to No. 230 Squadron in 1922 as a flight lieutenant.[7]

Interwar years edit

Keith was appointed chief instructor of the first Royal Air Force armament school at Eastchurch in 1925. In 1926 he was assigned to No. 70 Squadron in Iraq flying Vickers Vernon and Vickers Victoria bomber/transport aircraft. Since 1919 the RAF had been engaged in first large scale attempt at colonial control through air power.[8] Lord Trenchard promised that the RAF could control Iraq with air squadrons and a few armoured car squadrons, supported by locally recruited troops led by a few British troops, at a fraction of the cost of a large army garrison. Throughout the 1920s and 1930s, the RAF was used to quell minor rebellions and tribal banditry by swiftly punishing the culprits from the air.[9] In 1927 he was part of an RAF team on the Trans Oman Expedition[10] aimed at securing air routes which were viewed as vital in securing communication and control over British Empire territories.[11]

As squadron leader Keith commanded No. 6 (Army Co-operation) Squadron equipped with Bristol F.2 Fighter's between 1928 and 1930 operating in Northern Iraq.[12] During this time his emphasis on gunnery skills led to the first ever 100% of bullets on target being achieved by Flying Officer C.H. Evans, with 11 of 12 pilots in his squadron becoming 'Hundred-Percenters' and receiving a letter of congratulations from Lord Trenchard, the Chief of the Air Staff.[13] The squadron was briefly assigned to Egypt[14] to quell riots between the Arab and Jewish communities in Palestine.

Aircraft armament edit

From 1930 to 1933 Keith was in charge of the design of all bombs at the Woolwich Arsenal.[15] In September 1933 Wing Commander C. H. Keith joined the Air Ministry[16] as an Assistant Director of Armament Research and Development with responsibility for armament. His role in the arming of the RAF over the next three years led to key decisions that were critical for the success of the RAF in the battle of Britain. In July 1934 after meetings with Air Commodore Arthur Tedder he organised an informal conference to consider air gunnery which led to the formation of the 'Air Fighting Committee' on which Keith served till 1936. Keith and his team presented their work showing that future aircraft should carry eight machine guns capable of firing at least 1,000 rounds per minute. Both the number of guns and the rate of fire was seen as revolutionary at a time when many officers thought four guns were adequate and Air Marshal Brooke-Popham is famously quoted as saying "I think eight guns is going a bit far[17] With the support of Air Marshall Arthur Tedder the decision was made.[18] Further input from Keith and his team led to the decision to replace the English Vickers machine gun with the more reliable American Browning machine guns and to adapt these to RAF use. The Browning became the main armament for Supermarine Spitfires and Hawker Hurricanes in the Battle of Britain. Having used slow motion film to record the penetration of bombs it was Keith who arranged the first such evaluation of machine guns. He was also actively engaged in the development and trials of suitable ammunition. These guns used the same bullets as a rifle and the need for a more powerful weapon had long been recognised.

Keith played a key role in the decision to introduce the French designed Hispano 20 mm cannon after a visit to France in 1936.[19] The Hispano cannon was then made under license in Britain and was first used in 1940. Early trials in Hurricanes and Spitfires found that the gun could jam during combat[20] but after modifications it became standard armament in later fighters. The Hispano proved to be a good 'tank buster' and allowed Spitfires and Hurricanes to make effective attacks on ground targets and enemy shipping becoming one of the most used aircraft guns of the 20th Century.

Keith also played a part in the introduction of the Frazer-Nash power-driven gun turret securing the first order of 64 turrets for the RAF.[21] This invention was of immense value as the Second World War approached and fitted with up to four .303 Browning machine guns was standard equipment in British bombers. He developed the training strategy of attaching a light to the guns and instructing the trainee gunner to follow an independent light shone against a wall.

Keith commanded RAF Worthy Down from September 1936.[22] In 1937 he was promoted to Group Captain[23] and published The Flying Years[12] about his early career and his experiences in Iraq. He was subsequently appointed as the RAF member to the Ordnance Board at Woolwich.

Second World War edit

In 1939 Keith was Commander of RAF Marham heavy bomber station and aircraft under his command were some of the first to launch raids against Germany. In 1940 he found "An Airman's Letter to His Mother" written by the young pilot of a Vickers Wellington bomber supporting the evacuation of the BEF at Dunkirk to be sent to his mother in the event of his death. Group Captain Keith was so moved by the letter that, with the mother's permission, it was anonymously published in The Times on 18 June 1940.[24] Published as a small book,[25] it went on to sell over 500,000 copies in the first year and was then made into a short propaganda film.

Keith served a short period as President of the Aircrew Selection Board before he was appointed the first Commanding Officers of Picton Gunnery School, Canada, in April 1941. This was part of the Commonwealth Air Training Plan providing Canadian and RAF personnel with training bases away from the dangers and restrictions of training in wartime Britain.[26] Unlike the members of the RAF, Royal Canadian Air Force personnel paid the lower Canadian rate of tax and none at all if they flew more than average time each year. This with other " hardships", produced "bitterness" and "dissatisfaction" among the RAF personnel serving in Canada. Keith presented a list of "20 points of hardships" which he felt "should be removed but got no support. He managed to get six of the twenty points cleared up, but then he was recalled to England in April 1942 despite the Canadian Chief of Air Staff requesting that he be allowed to remain.[27]

Keith was assigned to command the RAF Central Gunnery School[28] at RAF Sutton Bridge, but after a short period of sickness and a recommendation from the medical officer that he should serve in the south of England he was listed as "supernumerary". In the Houses of Parliament on 3 February 1943 Tom Driberg, MP, asked why Keith had been recalled and why it was proposed to retire him, saying; "Is it not a fact that this officer was brought back from Canada after serving eight months, although it had been laid down that he should serve not less than 18 months, and that he was given the highest tributes, officially and unofficially, for his efficiency?" The Secretary of State for Air replied that a policy had been in place since "the summer of 1941, under which senior officers must give way to younger men when circumstances so require" and deplored that individual officers were named. Tom Driberg responded by saying "Is it not more deplorable that they should be treated unjustly?" Keith reports first hearing of this after receiving a copy of Hansard[29] in the post. Within a few months he was retired and subsequently took a post with the BBC as an announcer. His insistence that hardships for RAF staff in Canada be removed led to two meetings of the Air Council and to a final concession of all the "20 points of hardships" he had raised.[30]

"I Hold My Aim" is the motto of the Air Gunnery School and the title of Keith's book published in 1946, it gives a fascinating glimpse into the work of a man who, perhaps more than any other individual can be said to have 'put the fire in the Spitfire'.[citation needed] He writes:

"I ran my Station commands as a dictator – a benevolent one, I hope – and I built the efficiency of my units through the happy, hard work of my airmen. They knew I should bite them when they deserved it, and fight like hell for them when they merited it. I have always refused to be a 'Yes Man' when it affected my doing what I thought to be right for those under me. That is probably why I am in plain clothes, as I write this book."[31]

Sidelined from the official history except for a footnote as the Commanding Officer of an anonymous young pilot Group Captain Keith died in 1946 in Surrey. He was survived by his wife, Mary Gwendoline (née Dunkerley).

References edit

Notes
  1. ^ Saskatchewan, Birth Index, 1875-1908
  2. ^ Great Britain, Royal Aero Club Aviators' Certificates, 1910-1950
  3. ^ England & Wales, National Probate Calendar (Index of Wills and Administrations), 1858–1995
  4. ^ 1901 England Census
  5. ^ The New York Times, 12 December 1910
  6. ^ a b Keith (1946), p. 16.
  7. ^ "Royal Air Force: Appointments". Flight. XIV (681): 29. 12 January 1922. Retrieved 11 October 2015.
  8. ^ Corum, Dr. James S. "The Myth of Air Control, Reassessing the History". Aerospace Power Journal (Winter 2000).
  9. ^ Satia, Priya (2006). "The Defense of Inhumanity: Air Control and the British Idea of Arabia". American Historical Review. III (1).
  10. ^ Close, Charles, Arnold Wilson, Professor Seligman, C. H. Keith & C. L. Courtney (January 1931). "A Journey into Rub' Al Khali: The Southern Arabian Desert". The Geographical Journal. 77 (1): 31–37. doi:10.2307/1785121. JSTOR 1785121.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  11. ^ ʻAbd Allāh, Muḥammad Mursī (1978). The United Arab Emirates: A Modern History. Croom Helm. p. 49. ISBN 978-0-06-494998-9.
  12. ^ a b Keith, C. H. (1937). The Flying Years 1926-1930. J. Hamilton Ltd.
  13. ^ Keith (1946), p. 128.
  14. ^ Barrass, M. B. (2015). "No. 6–10 Squadron Histories". Air of Authority - A History of RAF Organisation. Retrieved 11 October 2015.[permanent dead link]
  15. ^ "Royal Air Force: Appointments". Flight. XXXII (1503): 385. 14 October 1937. Retrieved 11 October 2015.
  16. ^ "Royal Air Force: Appointments". Flight. XXV (1295): 1061. 19 October 1933. Retrieved 11 October 2015.
  17. ^ Sinnott, Colin (2001). The RAF and Aircraft Design: Air Staff Operational Requirements 1923-1939. London: Frank Cass. p. 144. ISBN 9780714651583.
  18. ^ Keith (1946), p. 78.
  19. ^ Keith (1946), p. 94.
  20. ^ Chinn, George M. (1951). "Chapter 14: Birkigt Type 404 20-mm (Hispano-Suiza) Cannon". The Machine Gun: History, Evolution, and Development of Manual, Automatic, and Airborne Repeating Weapons. Bureau of Ordnance, Department of the Navy. pp. 562–569. Retrieved 11 October 2015 – via Hyperwar Foundation.
  21. ^ Keith (1946), p. 104.
  22. ^ "Royal Air Force: Appointments". Flight. XXX (1456): 559. 19 November 1936. Retrieved 11 October 2015.
  23. ^ "Royal Air Force: Appointments". Flight. XXXII (1489): 58. 8 July 1937. Retrieved 11 October 2015.
  24. ^ The Times, 18 June 2004
  25. ^ An Airmans Letter to His Mother, Times Publishing Ltd., 1940
  26. ^ . Archived from the original on 3 April 2012. Retrieved 12 November 2011.
  27. ^ Keith (1946), p. 123.
  28. ^ Barrass, M. B. (2015). "RAF Station Commanders - Lincolnshire and East Midlands". Air of Authority - A History of RAF Organisation. Retrieved 11 October 2015.
  29. ^ Tom Driberg, MP for Maldon (3 February 1943). "Group-Captain C. H. Keith". Parliamentary Debates (Hansard). House of Commons. col. 870–871. Retrieved 11 October 2015.
  30. ^ Keith (1946), p. 124.
  31. ^ Keith (1946), p. 168.
Bibliography
  • Keith, C. H. (1946). I Hold My Aim: The Story of how the Royal Air Force was Armed for War. Allen & Unwin Press.

claude, hilton, keith, group, captain, october, 1890, november, 1946, british, canadian, aviator, early, pioneer, gunnery, playing, central, role, preparation, royal, force, second, world, work, assistant, director, armament, research, development, with, respo. Group Captain Claude Hilton Keith 21 October 1890 18 November 1946 was a British Canadian aviator who was an early pioneer of air gunnery playing a central role in the preparation of the Royal Air Force RAF for the Second World War His work as Assistant Director of Armament Research and Development with responsibility for armament led to the establishment of the Air Fighting Committee in 1934 His career ended prematurely after championing the rights of RAF personnel posted in Canada Claude Hilton KeithBorn21 October 1890 1 2 Qu Appelle Saskatchewan CanadaDied18 November 1946 1946 11 18 aged 56 3 Surrey EnglandAllegianceUnited KingdomService wbr branchRoyal Naval Air Service 1915 18 Royal Air Force 1918 43 Years of service1915 1943RankGroup CaptainCommands heldRAF Central Gunnery SchoolPicton Gunnery SchoolPresident Aircrew Selection BoardRAF MarhamRAF Worthy DownNo 6 Squadron RAFBattles warsFirst World WarSecond World War Contents 1 Early life 2 Military career 2 1 Interwar years 2 1 1 Aircraft armament 2 2 Second World War 3 ReferencesEarly life editClaude H Keith was born in Qu Appelle Saskatchewan Canada in 1890 to English parents Hilton Keith and Ellen Mary Katharine Rogers He was baptised in Cornwall in 1891 and was living with his grandparents in 1901 in London 4 His father was an Indian Agent in the Touchwood Hills He trained as an electrical engineer with Marconi s Wireless Telegraph Company and was present at Dover in 1909 as Bleriot landed after completing the first air crossing of the English Channel In 1910 he travelled to Fiji to establish three new radio stations 5 In 1912 he made his first flight with Hubert Spencer in a dual control box kite Military career editKeith joined the Royal Naval Air Service in 1915 6 and qualified on seaplanes in 1916 As a probationary flight officer he was charged with endangering one of His Majesty s aircraft by looping the loop and a year later was teaching this as part of basic training He became a Seaplane Group Navigational Officer and after the RNAS was amalgamated with the Royal Flying Corps in 1918 was commissioned in the RAF and became a specialist in navigation and armament at the School of Naval Co operation and Aerial Navigation where he drafted the syllabus for the RAF s first Long Range Navigation course before taking it himself 6 He was subsequently attached to No 230 Squadron in 1922 as a flight lieutenant 7 Interwar years edit Keith was appointed chief instructor of the first Royal Air Force armament school at Eastchurch in 1925 In 1926 he was assigned to No 70 Squadron in Iraq flying Vickers Vernon and Vickers Victoria bomber transport aircraft Since 1919 the RAF had been engaged in first large scale attempt at colonial control through air power 8 Lord Trenchard promised that the RAF could control Iraq with air squadrons and a few armoured car squadrons supported by locally recruited troops led by a few British troops at a fraction of the cost of a large army garrison Throughout the 1920s and 1930s the RAF was used to quell minor rebellions and tribal banditry by swiftly punishing the culprits from the air 9 In 1927 he was part of an RAF team on the Trans Oman Expedition 10 aimed at securing air routes which were viewed as vital in securing communication and control over British Empire territories 11 As squadron leader Keith commanded No 6 Army Co operation Squadron equipped with Bristol F 2 Fighter s between 1928 and 1930 operating in Northern Iraq 12 During this time his emphasis on gunnery skills led to the first ever 100 of bullets on target being achieved by Flying Officer C H Evans with 11 of 12 pilots in his squadron becoming Hundred Percenters and receiving a letter of congratulations from Lord Trenchard the Chief of the Air Staff 13 The squadron was briefly assigned to Egypt 14 to quell riots between the Arab and Jewish communities in Palestine Aircraft armament edit From 1930 to 1933 Keith was in charge of the design of all bombs at the Woolwich Arsenal 15 In September 1933 Wing Commander C H Keith joined the Air Ministry 16 as an Assistant Director of Armament Research and Development with responsibility for armament His role in the arming of the RAF over the next three years led to key decisions that were critical for the success of the RAF in the battle of Britain In July 1934 after meetings with Air Commodore Arthur Tedder he organised an informal conference to consider air gunnery which led to the formation of the Air Fighting Committee on which Keith served till 1936 Keith and his team presented their work showing that future aircraft should carry eight machine guns capable of firing at least 1 000 rounds per minute Both the number of guns and the rate of fire was seen as revolutionary at a time when many officers thought four guns were adequate and Air Marshal Brooke Popham is famously quoted as saying I think eight guns is going a bit far 17 With the support of Air Marshall Arthur Tedder the decision was made 18 Further input from Keith and his team led to the decision to replace the English Vickers machine gun with the more reliable American Browning machine guns and to adapt these to RAF use The Browning became the main armament for Supermarine Spitfires and Hawker Hurricanes in the Battle of Britain Having used slow motion film to record the penetration of bombs it was Keith who arranged the first such evaluation of machine guns He was also actively engaged in the development and trials of suitable ammunition These guns used the same bullets as a rifle and the need for a more powerful weapon had long been recognised Keith played a key role in the decision to introduce the French designed Hispano 20 mm cannon after a visit to France in 1936 19 The Hispano cannon was then made under license in Britain and was first used in 1940 Early trials in Hurricanes and Spitfires found that the gun could jam during combat 20 but after modifications it became standard armament in later fighters The Hispano proved to be a good tank buster and allowed Spitfires and Hurricanes to make effective attacks on ground targets and enemy shipping becoming one of the most used aircraft guns of the 20th Century Keith also played a part in the introduction of the Frazer Nash power driven gun turret securing the first order of 64 turrets for the RAF 21 This invention was of immense value as the Second World War approached and fitted with up to four 303 Browning machine guns was standard equipment in British bombers He developed the training strategy of attaching a light to the guns and instructing the trainee gunner to follow an independent light shone against a wall Keith commanded RAF Worthy Down from September 1936 22 In 1937 he was promoted to Group Captain 23 and published The Flying Years 12 about his early career and his experiences in Iraq He was subsequently appointed as the RAF member to the Ordnance Board at Woolwich Second World War edit In 1939 Keith was Commander of RAF Marham heavy bomber station and aircraft under his command were some of the first to launch raids against Germany In 1940 he found An Airman s Letter to His Mother written by the young pilot of a Vickers Wellington bomber supporting the evacuation of the BEF at Dunkirk to be sent to his mother in the event of his death Group Captain Keith was so moved by the letter that with the mother s permission it was anonymously published in The Times on 18 June 1940 24 Published as a small book 25 it went on to sell over 500 000 copies in the first year and was then made into a short propaganda film Keith served a short period as President of the Aircrew Selection Board before he was appointed the first Commanding Officers of Picton Gunnery School Canada in April 1941 This was part of the Commonwealth Air Training Plan providing Canadian and RAF personnel with training bases away from the dangers and restrictions of training in wartime Britain 26 Unlike the members of the RAF Royal Canadian Air Force personnel paid the lower Canadian rate of tax and none at all if they flew more than average time each year This with other hardships produced bitterness and dissatisfaction among the RAF personnel serving in Canada Keith presented a list of 20 points of hardships which he felt should be removed but got no support He managed to get six of the twenty points cleared up but then he was recalled to England in April 1942 despite the Canadian Chief of Air Staff requesting that he be allowed to remain 27 Keith was assigned to command the RAF Central Gunnery School 28 at RAF Sutton Bridge but after a short period of sickness and a recommendation from the medical officer that he should serve in the south of England he was listed as supernumerary In the Houses of Parliament on 3 February 1943 Tom Driberg MP asked why Keith had been recalled and why it was proposed to retire him saying Is it not a fact that this officer was brought back from Canada after serving eight months although it had been laid down that he should serve not less than 18 months and that he was given the highest tributes officially and unofficially for his efficiency The Secretary of State for Air replied that a policy had been in place since the summer of 1941 under which senior officers must give way to younger men when circumstances so require and deplored that individual officers were named Tom Driberg responded by saying Is it not more deplorable that they should be treated unjustly Keith reports first hearing of this after receiving a copy of Hansard 29 in the post Within a few months he was retired and subsequently took a post with the BBC as an announcer His insistence that hardships for RAF staff in Canada be removed led to two meetings of the Air Council and to a final concession of all the 20 points of hardships he had raised 30 I Hold My Aim is the motto of the Air Gunnery School and the title of Keith s book published in 1946 it gives a fascinating glimpse into the work of a man who perhaps more than any other individual can be said to have put the fire in the Spitfire citation needed He writes I ran my Station commands as a dictator a benevolent one I hope and I built the efficiency of my units through the happy hard work of my airmen They knew I should bite them when they deserved it and fight like hell for them when they merited it I have always refused to be a Yes Man when it affected my doing what I thought to be right for those under me That is probably why I am in plain clothes as I write this book 31 Sidelined from the official history except for a footnote as the Commanding Officer of an anonymous young pilot Group Captain Keith died in 1946 in Surrey He was survived by his wife Mary Gwendoline nee Dunkerley References editNotes Saskatchewan Birth Index 1875 1908 Great Britain Royal Aero Club Aviators Certificates 1910 1950 England amp Wales National Probate Calendar Index of Wills and Administrations 1858 1995 1901 England Census The New York Times 12 December 1910 a b Keith 1946 p 16 Royal Air Force Appointments Flight XIV 681 29 12 January 1922 Retrieved 11 October 2015 Corum Dr James S The Myth of Air Control Reassessing the History Aerospace Power Journal Winter 2000 Satia Priya 2006 The Defense of Inhumanity Air Control and the British Idea of Arabia American Historical Review III 1 Close Charles Arnold Wilson Professor Seligman C H Keith amp C L Courtney January 1931 A Journey into Rub Al Khali The Southern Arabian Desert The Geographical Journal 77 1 31 37 doi 10 2307 1785121 JSTOR 1785121 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link ʻAbd Allah Muḥammad Mursi 1978 The United Arab Emirates A Modern History Croom Helm p 49 ISBN 978 0 06 494998 9 a b Keith C H 1937 The Flying Years 1926 1930 J Hamilton Ltd Keith 1946 p 128 Barrass M B 2015 No 6 10 Squadron Histories Air of Authority A History of RAF Organisation Retrieved 11 October 2015 permanent dead link Royal Air Force Appointments Flight XXXII 1503 385 14 October 1937 Retrieved 11 October 2015 Royal Air Force Appointments Flight XXV 1295 1061 19 October 1933 Retrieved 11 October 2015 Sinnott Colin 2001 The RAF and Aircraft Design Air Staff Operational Requirements 1923 1939 London Frank Cass p 144 ISBN 9780714651583 Keith 1946 p 78 Keith 1946 p 94 Chinn George M 1951 Chapter 14 Birkigt Type 404 20 mm Hispano Suiza Cannon The Machine Gun History Evolution and Development of Manual Automatic and Airborne Repeating Weapons Bureau of Ordnance Department of the Navy pp 562 569 Retrieved 11 October 2015 via Hyperwar Foundation Keith 1946 p 104 Royal Air Force Appointments Flight XXX 1456 559 19 November 1936 Retrieved 11 October 2015 Royal Air Force Appointments Flight XXXII 1489 58 8 July 1937 Retrieved 11 October 2015 The Times 18 June 2004 An Airmans Letter to His Mother Times Publishing Ltd 1940 How the Royal Air Force was armed for war Picton County Weekly Ontario CA Archived from the original on 3 April 2012 Retrieved 12 November 2011 Keith 1946 p 123 Barrass M B 2015 RAF Station Commanders Lincolnshire and East Midlands Air of Authority A History of RAF Organisation Retrieved 11 October 2015 Tom Driberg MP for Maldon 3 February 1943 Group Captain C H Keith Parliamentary Debates Hansard House of Commons col 870 871 Retrieved 11 October 2015 Keith 1946 p 124 Keith 1946 p 168 Bibliography Keith C H 1946 I Hold My Aim The Story of how the Royal Air Force was Armed for War Allen amp Unwin Press Retrieved from https en wikipedia org w index php title Claude Hilton Keith amp oldid 1220551117, wikipedia, wiki, book, books, library,

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