165 Heavy Anti-Aircraft Regiment RA (TA) was formed at Clifton, Bristol in July 1942. The Regiment served in Anti-Aircraft Command until March 1944 when it transferred to 2 Army. It went to Normandy in June 1944 and fought through France, Holland and Germany ending at Hamburg. 165 Heavy Anti-Aircraft Regiment RA (TA) was disbanded in January 1946 in NW Europe.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| Jul 42 | Formed | Freshford, Somerset, UK | |
| Jul 42 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | UK |
| Mar 44 |  |
2 Army | UK |
| Jun 44 | |
2 Army, 106 Anti-Aircraft Brigade | Normandy, France |
| Aug 44 | |
2 Army, 100 Anti-Aircraft Brigade | River Seine, France |
| Sep 44 | |
2 Army, 100 Anti-Aircraft Brigade | Nijmegen, Holland |
| Feb 45 | |
2 Army, 106 Anti-Aircraft Brigade | Reichswald, Germany |
| Mar 45 | |
2 Army, 4 Army Group RA | The Rhine, Germany |
| Apr 45 | |
2 Army, 100 Anti-Aircraft Brigade | Hamburg, Germany |
Batteries
| Jul 42 | 198, 275, 317 |
| Jun 45 | 198, 317 |