51 (Devon) Light Anti-Aircraft Regiment RA(TA) was converted from 56 Army Field Brigade, in November 1938. The Regiment was placed in suspended animation in January 1947. The personnel were formed into a war formed unit and re-designated 83 Light Anti-Aircraft Regiment RA and the TA Regiment re-constituted as 256 (Devon)(Mixed) Light Anti-Aircraft/Searchlight Regiment RA(TA) in early 1947.
| Nov 38 | Formed from 56 Army Field Brigade | UK |
| Nov 39 | 2 Anti-Aircraft Brigade | France |
| Jun 40 | Home Forces | RAF Tangmere, Sussex, UK |
| Jan 41 | 6 Armoured Division | UK |
| Nov 42 | 6 Armoured Division | N Africa |
| Mar 44 | 6 Armoured Division | Italy |
| Nov 44 | 8 Army | Italy |
Batteries
| Nov 38 | 151, 152, 153 |
Equipment
| 1939 | Bofors 40 mm, Morris CDSW LAA Tractor |
