138 Light Anti-Aircraft Regiment RA(TA) was formed in May 1942 at Newmarket. The Regiment was disbanded in December 1945 at Braughton, Barnstaple.
| May 42 | Formed from batteries from 64, 78, 79 & 96 Light Anti-Aircraft Regiments |
Newmarket, Suffolk, UK |
| May 42 | Home Forces | UK |
| Dec 45 | Disbanded | Barnstaple, Devon, UK |
Batteries
| May 42 | 454, 458, 469, 470 |
| Feb 44 | 454, 458, 469 |
