136th Heavy Anti-Aircraft Regiment was an air defence unit of Britain's Royal Artillery during World War II.

It protected the UK against air attack as part of Anti-Aircraft Command, including the defence against V-1 flying bombs (Operation Diver).

'Mixed' indicated that two-thirds of the personnel of the battery were women drawn from the Auxiliary Territorial Service, who had been called upon to ease AA Command's manpower shortage.

[4][10][11] The Luftwaffe carried out a number of air raids against the Midlands and NE England in the middle part of 1942, but nothing on the scale of the Blitz in 1940–41.

From April 1944, 2 AA Group had the additional responsibility of defending the ports at which the shipping for the invasion of Europe (Operation Overlord) was being gathered.

Large numbers of HAA guns under 2 AA Group were deployed in depth across the line of flight of the V-1s as part of Operation Diver.

The guns were constantly in action, but the success rate against the 'Divers' steadily improved, until over 50 per cent of incoming missiles were destroyed by gunfire or fighter aircraft.

[7][18][20][23] The Luftwaffe abandoned air-launched V-1s in January 1945, but a final burst of longer-range missiles were launched from the Netherlands in March 1945: the success rate of the AA guns against these was 80–100 per cent.

[24] Despite the depletion of AA Command to provide manpower for 21st Army Group, 136th HAA Rgt was one of the units that remained operational until the end.