77 Anti-Tank Regiment RA was formed at St Audrey’s Camp, Watchet in June 1942 from disbanding Mobile Defence troops. In February 1943 RHQ was disbanded at Holcombe Rogers, Taunton and the batteries dispersed to other units.
| Jun 42 | Formed from Mobile Defence troops | Watchet, Somerset, UK |
| Jun 42 | Home Forces | UK |
| Mar 43 | Disbanded | Taunton, Somerset, UK |
Batteries
| Jun 42 | Q, R, S, T |
| Jan 43 | 120, 121, 122, 123 |