[1][4] The majority of AA Command's guns and searchlights were operated by Territorial Army units.

Later, as the war progressed, Regulars and TA were freed up for overseas service by the use of men of the Home Guard (loading and firing the guns) and women of the Auxiliary Territorial Service (handling ammunition and operating gun directors).

At the end of 1940, the Command created three Corps to supervise this expanding organisation:[2][5][7][9] In October 1942, the corps and divisions were abolished and replaced by seven flexible AA Groups more closely aligned with the operational structure of Fighter Command:[2][5][13] (1st and 2nd AA Groups coincided with No.

[2][14] A new 9th Anti-Aircraft Group was formed to cover southern East Anglia during the flying bomb offensive (Operation Diver).

[2] When the TA was reformed after the Second World War in 1947, AA Command was generously provided for, with a large number of units, some of them including members of the Women's Royal Army Corps (successors of the ATS).