146 (Pembroke & Cardiganshire) Field Regiment RA (TA) was formed in July 1939 with two batteries as a duplicate of 102 Field Regiment. A third battery was formed in January 1941. The Regiment moved to North Africa in September 1942 and then Italy one year later before becoming a Medium Regiment. 146 (Pembroke & Cardiganshire) Field Regiment RA (TA) converted to 146 (Pembroke & Cardiganshire) Medium Regiment RA (TA) in October 1944. Post war it went into suspended animation in January 1946 and was disbanded 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 |  |
38 Infantry Division | Aberystwyth, Dyfed, UK |
| May 42 | Home Forces | UK | |
| Sep 42 |  |
8 Armoured Division | N Africa |
| Oct 42 | |
8 Armoured Division | Alamein, Egypt |
| Dec 42 |  |
7 Armoured Division | N Africa |
| Aug 43 | Hammerforce | N Africa | |
| Sep 43 |  |
10 Corps | Salerno, Italy |
| Dec 43 | Became 146 Medium Regiment |
Batteries
| Jul 39 | 407 (Cardigan), 408 (Cardigan) |
| Jan 41 | 407, 408, 510 |
| May 42 | 407, 408, 510, 282 Anti-Tank Battery |
| Sep 42 | 407, 408, 510 |
Equipment
| Sep 42 | Stuart Observation Post tanks |