566 (Devon) Coast Regiment RA(TA) was formed from part of Devon Heavy Regiment RA(TA) at Plymouth with three batteries, in April 1941. It was re-designated 566 (Devon & Cornwall) Coast Regiment RA(TA) in June 1945. The Regiment was placed in suspended animation in January 1946 and reconstituted as 407 (Devon) Coast Regiment RA(TA) in January 1947.
| Apr 41 | Formed from part of Devon Heavy Regiment | Plymouth, Devon, UK |
| 1941 | Alabaster Force | Iceland |
| Dec 42 | Drakes Fire Command | Plymouth, Devon, UK |
| Jun 45 | Re-designated 566 (Devon & Cornwall) Coast Regiment | |
| Jan 46 | Suspended animation |
Batteries
| Apr 41 | 159, 160, 161 |
| Apr 42 | 159, 160, 161, 195, 196 |
| Apr 43 | 137, 156, 159, 160, 161, 195, 196 |
| May 43 | 137, 156, 159, 161, 195, 196, 443 |
| Apr 44 | 137, 156, 159, 161, 162, 163, 164, 195, 196, 443 |
| Jun 45 | 137, 156, 162, 163, 164, 195 |
