30 Field Brigade RA (Army) was formed in April 1936 by conversion of 2 Light Brigade RA. 11, 12 & 17 Light Batteries were converted to 111, 112 & 117 Field Batteries. 30 Field Regiment RA (Army) was re-designated from 30 Field Brigade RA (Army) in October 1938 on a two battery basis. By September 1939 the (Army) title had been dropped. It re-organised into 3 batteries in December 1940. Post war, 30 Field Regiment RA became 38 Training Regiment RA in April 1947.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| 3 Sep 39 |  |
4 Infantry Division | Colchester, Essex, UK |
| Sep 39 | |
4 Infantry Division | France |
| Jun 40 | |
4 Infantry Division | UK |
| 24 Mar 43 |  |
4 Infantry Division | Landed Algeria |
| Jan 44 | |
4 Infantry Division | Suez, Egypt |
| Feb 44 | |
4 Infantry Division | River Garigliano, Italy |
| May 44 | |
4 Infantry Division | Cassino, Italy |
| Jun 44 | |
4 Infantry Division | Tivoli, Italy |
| Jun 44 | |
4 Infantry Division | Trasimene Line, Italy |
| Jul 44 | |
4 Infantry Division | Chianti Mountains, Italy |
| Sep 44 | |
4 Infantry Division | Gothic Line, Italy |
| Dec 44 | |
4 Infantry Division | Greece – Provided an infantry company for RA Battalion |
Batteries
| Apr 36 | 111, 112, 117 |
| Oct 38 | 104/111, 112/117 |
| May 44 | 104, 111, 112/117 |
Equipment
| Sep 39 | 18/25 pdrs |
| 1940 – Dec 44 | 25 pdrs |
| Jul 44 | Carrier Observation Posts |