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The Air Defence of Great Britain (ADGB) was a RAF command comprising substantial army and RAF elements responsible for the air defence of the British Isles. It lasted from 1925, following recommendations that the RAF take control of homeland air defence, until 1936 when it became RAF Fighter Command. ==History== The ADGB was created as a command in 1925 as a result of the 1923 recommendation of the Steel-Bartholomew Committee, including their recommendation to transfer responsibility for homeland air defence from the War Office to the Air Ministry. It main initial elements were: * The RAF's Metropolitan Air Force, initially comprising 25 squadrons (9 fighter), soon expanding to 52 squadrons (17 fighter). * 264 heavy AA guns (Royal Artillery) and 672 searchlights (Royal Engineers). * The newly formed part-time volunteer Observer Corps. ADGB was organised into three defensive zones: * Inner Artillery Zone (IAZ), over London. * Air Fighter Zone (AFZ), divided into two areas controlling regular squadrons, the Wessex Bombing Area and the Fighting Area. * Outer Artillery Zone (OAZ), a narrow belt along the coast from Suffolk to Sussex.〔"p. 62" (A Short History of the Royal Air Force, Chapter 2, The Inter War Years, 1919-1939 )〕 In 1936, ADGB was abolished as a command, with the Bombing Area becoming Bomber Command and the Fighting Area becoming Fighter Command and remaining responsible for the ADGB function.〔"p. 87" (A Short History of the Royal Air Force, Chapter 2, The Inter War Years, 1919-1939 )〕〔"British Military Aviation in 1936" (RAF Museum )〕 The OAZ was abolished and the AFZ expanded. The guns from the OAZ were used for port and base defence and were added to the London defences. However, the changing threat meant that AA defences were needed for many more potential targets in the British Isles, notably industries important for war production. The AA component became 1st AA Division, and in 1937, 2nd AA Division was formed to defend the Midlands, with AA Command created to replace the previous Army arrangements. In 1937, light AA guns were added, the RAF's view that small-calibre artillery were unsuitable having been finally overturned. In 1940, searchlights were transferred from the Royal Engineers to the Royal Artillery. Unrotated Projectile (rocket) batteries were deployed at the beginning of the war. At its peak in 1941-42, AA Command comprised three AA corps with twelve AA divisions comprising several hundred regiments. GOC-in-C AA Command for most of the war was General Sir Frederick Pile, the equal in rank of his 'superior' AOC-in-C Fighter Command. ADGB was resurrected as a formal command in 1943 for the rump of Fighter Command dedicated to the defence of the United Kingdom after the formation of the Second Tactical Air Force in 1943 and the still-large AA Command.〔"British Military Aviation in 1943 - Part 4" (RAF Museum )〕 It was Fighter Command in all but name, and this was finally reflected in 1944 with a return to the previous name.〔"British Military Aviation in 1944 - Part 5" (RAF Museum )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air Defence of Great Britain」の詳細全文を読む スポンサード リンク
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