33 Light Anti-Aircraft Regiment RA (TA) was formed at Liverpool, in August 1939. It was converted to 33 Light Anti-Aircraft/Anti-Tank Regiment in August 1943 and re-constituted as 533 Light Anti-Aircraft/Searchlight Regiment RA (TA) in January 1947.
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.
| Sep 39 |  |
Western Command | Liverpool, Merseyside, UK |
| Oct 39 |  |
4 Anti-Aircraft Division, 33 Anti-Aircraft Brigade | Liverpool, Merseyside, UK |
| Oct 41 |  |
2 Anti-Aircraft Division, 40 Anti-Aircraft Brigade | The Midlands, UK |
| Jul 42 | 13 Anti-Aircraft Brigade | Madras, India | |
| Mar 43 | 3 Indian Anti-Aircraft Brigade | India | |
| Jul 43 |  |
33 Indian Corps | India |
| Aug 43 | Became 33 Light Anti-Aircraft/Anti-Tank Regiment 2 batteries to 69 Light Anti-Aircraft/Anti-Tank Regiment |
Batteries
| Sep 39 | 132, 133 |
| Oct 40 | 67, 68, 132 |
| Jul 43 | 67, 68, 132, 523 |