51 (Highland) Searchlight Regiment RA(TA) formed in August 1940 by the transfer of 51 (Highland) Anti-Aircraft Battalion Royal Engineers (TA) to the RA. The Regiment was converted to 124 Light Anti-Aircraft Regiment RA in February 1942. It was re-constituted as 586 (Highland) Light Anti-Aircraft/Searchlight Regiment RA(TA) in January 1947.
| Aug 40 | Formed from 51 Anti-Aircraft Battalion Royal Engineers | |
| Aug 40 | 52 Anti-Aircraft Brigade, 3 Anti-Aircraft Division | Dundee, UK |
| Feb 42 | Became 124 Light Anti-Aircraft Regiment |
Batteries
| Aug 40 | 319, 320, 404 |
