120 (South Midland) Field Regiment RA (TA) was formed in July 1939 at Solihull with two batteries as a duplicate of 68 Field Regiment. In March 1941 a third battery was formed. The Regiment wore an arm badge on the battledress of a white bear and ragged staff. Post war 120 (South Midland) Field Regiment RA (TA) went into suspended animation in April 1946 and was re-constituted as 320 (South Midland) Heavy Anti-Aircraft Regiment RA(TA) in January 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.
(Title authorised February 1942)
| Jul 39 |  |
61 Infantry Division | Birmingham, UK |
| Jun 40 | |
61 Infantry Division | Northern Ireland |
| Feb 43 | |
61 Infantry Division | Essex, UK |
| May 43 | |
61 Infantry Division | Kent, UK |
| Jun 44 |  |
48 Infantry Division | UK |
Batteries
| Jul 39 | 270 (Warwick), 272 (Warwick) |
| Mar 41 | 270, 272, 485 |
| Aug 45 | 146, 270, 272, 485 |