23 Light Anti-Aircraft Regiment RA(TA) was formed at Bristol, in December 1938. It was converted to 23 Parachute Light Anti-Aircraft/Anti-Tank Regiment in February 1945. The unit re-constituted as 523 (Gloucestershire) Light Anti-Aircraft Regiment RA(TA) in January 1947.
| Sep 39 | Southern Command | Bristol, UK |
| Oct 39 | 65 Anti-Aircraft Brigade | Southampton, Hampshire, UK |
| 1 Jul 42 | 23 Anti-Aircraft Brigade | Colombo, Ceylon (Sri Lanka) |
| Apr 44 | 44 Indian Airborne Division | India |
| Feb 45 | Became 23 Parachute Light Anti-Aircraft/Anti-Tank Regiment |
Batteries
| Sep 39 | 73, 74, 75, 130 |
| Nov 39 | 73, 74, 130 |
| Feb 41 | 73, 74, 130, 229 |
| Jul 42 | 73, 74, 130 |
Equipment
| Jul 42 | Bofors 40 mm |
