Air Defense of Great Britain
| Air Defence of Great Britain | |
|---|---|
| Active | 1925–1936 |
| Country |
 United Kingdom
|
| Branch |
 Royal Air Force
|
| Type | Command |
| Role | Homeland Air Defence |
| Garrison/HQ |
Air Ministry, London (1925–1926) Hillingdon House, Uxbridge (1926–1936) |
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.
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:
ADGB was organised into three defensive zones:
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. 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 Anti-Aircraft Division, and in 1937, 2nd Anti-Aircraft Division was formed to defend the Midlands, with Anti-Aircraft 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 from 1941–42, AA Command comprised 1, 2 and 3 Anti-Aircraft 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.
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