149 (Sherwood Foresters) Light Anti-Aircraft Regiment RA(TA) was converted from 40 Searchlight Regiment in June 1943 at Holywood. The Regiment was placed in suspended animation in February 1946 and was re-constituted as 575 (6th Battalion The Sherwood Foresters) Light Anti-Aircraft Regiment RA(TA) in January 1947.
| Jun 43 | Formed from 40 Searchlight Regiment | Holywood, Co. Down, UK |
| Jul 43 | Home Forces | East Anglia, UK |
| Aug 43 | 55 Infantry Division | UK |
| Dec 43 | 2 Army | UK |
| Jun 44 | 107 Anti-Aircraft Brigade, 2 Army | Normandy, France |
| Aug 44 | 1 Canadian Army | France |
| Sep 44 | 1 Canadian Army | Dunkirk, France |
| Mar 45 | 1 Canadian Army | Rhine bridges, Holland/Germany |
| Apr 45 | 1 Canadian Army | Frisia, Holland |
Batteries
| Jun 43 | 501, 502, 503 |
| Feb 44 | 80, 283, 502 |
