123 (West Riding) Field Regiment RA (TA) was formed in May 1939 with two batteries as a duplicate of 71 Field Regiment. When 46 Division joined the BEF in France it was as a labour Division. Their support units including 123 Field remained in the UK. In December 1940 a third battery was formed at Houghton le Spring, Sunderland. In November 1944 it converted to 123 (West Riding) Parachute Field Regiment RA (TA) reverting to a standard field regiment in September 1945. Post war the Regiment went into suspended animation in September 1946 and was re-constituted as 323 (West Riding) Light 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)
| May 39 |  |
46 Infantry Division | Sheffield, Yorkshire, UK |
| Apr 40 | |
46 Infantry Division | UK |
| Jun 40 | |
46 Infantry Division | UK |
| Jul 40 | Home Forces | UK | |
| Aug 42 | 32 Indian Armoured Division | Poona, India | |
| Nov 44 | Became 123 Parachute Field Regiment | ||
| Sep 45 | Reverts to 123 Field Regiment |
Batteries
| May 39 | 283 (9th West Riding), 284 (12th West RIding) |
| Dec 40 | 283, 284, 488 |