133 Light Anti-Aircraft Regiment RA (TA) was converted in March 1942 from 89 Searchlight Regiment. The Regiment served in 8 Anti-Aircraft Division until March 1943 when it came under War Office control, training for D Day. It moved to Normandy in August 1944 moving through Fance to Antwerp in Belgium. It finished its war in Germany with the Canadians. 133 Light Anti-Aircraft Regiment RA (TA) was disbanded in March 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.
| Mar 42 | Formed from 89 Searchlight Regiment | ||
| Mar 42 |  |
8 Anti-Aircraft Division, 60 Anti-Aircraft Brigade | Watchet, Somerset, UK |
| Jun 42 | |
8 Anti-Aircraft Division, 69 Anti-Aircraft Brigade | South West England |
| Sep 42 | |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade RHQ & 444 Battery only |
Bristol, UK |
| Mar 43 |  |
War Office control, 74 Anti-Aircraft Brigade | UK |
| Aug 44 |  |
1 Canadian Army | Normandy, France |
| Oct 44 |  |
21 Army Group, 5 Royal Marine Anti-Aircraft Brigade | Antwerp, Belgium |
| Feb 45 |  |
2 Canadian Corps, 74 Anti-Aircraft Brigade | Reichswald, Germany |
Batteries
| Mar 42 | 298, 442, 443, 444 |
| May 42 | 298, 442, 443, 444, 475 |
| Jul 42 | 442, 443, 444, 465 |
| Oct 42 | 442, 443, 444 |