150 (The Loyals) Light Anti-Aircraft Regiment RA (TA) was converted from 62 Searchlight Regiment in April 1943 at Downpatrick, Co Down. The Regiment served in the UK until February 1945, mostly training for D Day. It then moved to North West Europe, joining 21 Army Group and ending its war in Antwerp under 50 Anti-Aircraft Brigade. 150 (The Loyals) Light Anti-Aircraft Regiment RA (TA) was placed in suspended animation in February 1946 and was re-constituted as 597 (The Loyals) 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.
| Apr 43 | Formed from 62 Searchlight Regiment | Downpatrick, Co. Down, UK | |
| Apr 43 |  |
21 Army Group | UK |
| Jul 43 | 103 Anti-Aircraft Brigade (GHQ Reserve) | Camborne, Cornwall, UK | |
| Sep 43 | |
21 Army Group | Leeds, Yorkshire, UK |
| Mar 44 |  |
9 Armoured Division | UK |
| Jul 44 |  |
55 Infantry Division | UK |
| Feb 45 | |
21 Army Group | NW Europe |
| Apr 45 | |
21 Army Group, 50 Anti-Aircraft Brigade | Antwerp, Belgium |
Batteries
| Apr 43 | 504, 505, 506 |