The 128th Light Anti-Aircraft Regiment (128th LAA Rgt) was an air defence unit of Britain's Royal Artillery during World War II.

This layout was an attempt to improve the chances of picking up enemy bombers and keeping them illuminated for engagement by AA guns or night fighters.

During this period the Luftwaffe carried out a series of night attacks, the co-called Baedeker Blitz, including raids on Birmingham in June and July.

These raids continued until mid-1943[10][13][16][17][18] With the lower threat of attack by the weakened Luftwaffe, AA Command was forced in early 1944 to release manpower for the planned invasion of Normandy (Operation Overlord).

[7][11][19][20] In the early part of 1944, 3 AA Group had responsibilities for protecting 'Overlord' camps and embarkation ports, and at the same time preparing for the expected onslaught of V-1 flying bombs ('Divers').

The story in the London area was different, and as efforts to combat them (Operation Diver) progressed, AA units and formations were stripped from the West Country and repositioned along the coast of South East England.

At the same time, the Luftwaffe was suffering from such shortages of pilots, aircraft and fuel that serious conventional air attacks on the United Kingdom could be discounted.

The war in Europe ended on 8 May (VE Day), but the converted artillery units served in the occupation forces for several months.