482 LAA Btys 53rd (RNF) S/L Rgt – to 30 AA Bde August 1942 408, 409, 410, 565 S/L Btys 7 AA 'Z' Rgt – from 30 AA Bde by May 1942 106, 109, 110, 117 Z Btys 43 AA Brigade Signal Office Mixed Subsection – part of 2 Company, 7 AA Division Mixed Signal Unit, Royal Corps of Signals (RCS) Later war In October 1942 AA Command reorganised its structure, replacing the AA Divisions with AA Groups coinciding with RAF Fighter Command's Groups. 43 AA Bde came under 6 AA Group, covering Scotland and North-East England. By late 1943 AA Command was being forced to make manpower cuts, releasing men to 21st Army Group for Operation Overlord, the planned Allied invasion of Normandy, and a number of batteries were disbanded. Order of Battle 1942–44 During this period the composition of the brigade was as follows: 123rd HAA Rgt – to East Africa Command November 1942 402, 402, 404, 417 HAA Btys 126th HAA Rgt – to 7 AA Group November 1942 423, 425, 426, 431 HAA Btys 129th (M) HAA Rgt – from 36 (Scottish) AA Bde April 1943 444, 445, 454, 455 (M) HAA Btys 145th (M) HAA Rgt – to 36 AA Bde April 1943 500, 501, 502, 531 (M) HAA Btys 136th LAA Rgt 386, 453, 474 LAA Btys 482 LAA Bty – left November 1943 7 AA 'Z' Rgt – became Mixed February 1943; redesignated 7 AA Area Mixed Rgt April 1944 106, 117 Z Btys 109, 110 Z Btys – left by March 1944 226, 229 Z Btys – joined February 1943 43 AA Brigade Mixed Signal Office Section – part of 2 Company, 6 AA Group Mixed Signal Unit, RCS Operation Diver In March 1944, 6 AA Group HQ was transferred to Southern England to assist 2 AA Group by taking over some of the responsibility for defending the assembly camps, depots and embarkation ports for Operation Overlord, and planning for the expected onslaught of V-1 flying bombs (codenamed 'Divers'). 5 AA Group assumed responsibility for NE England, including 43 AA Bde. The first V-1 missiles were fired against London in June, a week after D-Day, and Operation Diver was activated. 2 AA Group's HAA batteries left their 'Overlord' sites and moved to pre-planned sites across the 'funnel' of V-1 flightpaths. 43 AA Brigade was one of four reinforcing brigade HQs moved into