149 (Sherwood Foresters) Light Anti-Aircraft Regiment RA (TA) was converted from 40 Searchlight Regiment in June 1943 at Holywood. The Regiment went to France in August 1944 as part of 107 Anti-Aircraft Brigade. It served with the Canadians until the end of the war. 149 (Sherwood Foresters) Light Anti-Aircraft Regiment RA (TA) 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.
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.
| 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 |
| Aug 44 | |
2 Army, 107 Anti-Aircraft Brigade | Caen, France |
| Aug 44 |  |
1 Canadian Army, 107 Anti-Aircraft Brigade | Risle bridges, France |
| Sep 44 | |
1 Canadian Army, 107 Anti-Aircraft Brigade | Dunkirk, France |
| Mar 45 | |
1 Canadian Army, 107 Anti-Aircraft Brigade | Rhine bridges, Holland/Germany |
| Apr 45 | |
1 Canadian Army, 107 Anti-Aircraft Brigade | Frisia, Holland |
Batteries
| Jun 43 | 501, 502, 503 |
| Feb 44 | 80, 283, 502 |