Pembroke Yeomanry
| Date | Unit | Higher Formation |
| . | . | . |
| . | . | . |
| . | 302nd (Pembroke Yeomanry) Field Regiment, RA | . |
| 1947.01.01 | reconstituted in T.A. with HQ at Haverfordwest | . |
| 1956.10.31 | Absorbed Pembroke btys of 408 Coast Regiment without change of title | . |
| 1961.05.01 | Converted as independent reconnaissance squadron attached to The Shropshire Yeomanry, and transferred to Royal Armoured Corps as The Pembroke Yeomanry (Castlemartin) | . |
| 1967.04.01 | Disbanded and concurrently reconstituted as two units: | . |
| . | A Company (Pembroke Yeomanry), The 4 (T) Battalion, The Welch Regiment formed in TAVR III at Haverfordwest | 4 (T) Battalion, The Welch Regiment |
| . | A Troop (Pembroke Yeomanry), 223 (South Wales) Squadron, 157 (Wales and Midlands) Transport Regiment RCT formed in TAVR II | 157 (Wales and Midlands) Regiment RCT |
| 1969.01.01 | 224 (West Wales) Transport Squadron, 157 (Wales and Midlands) Regiment, RCT formed at Haverfordwest and Carmarthen by amalgamation of A Troop and A Company upon reduction of 4th Bn The Welch Regt to cadre | 157 (Wales and Midlands) Regiment RCT |
| 1987 | 224 Sqn redesignated as 224 (Pembroke Yeomanry) Transport Squadron | . |
| 1993.04.01 | Regiment transferred to Royal Logistic Corps and squadron redesignated 224 (Pembroke Yeomanry) Engr Sp Sqn (V) at Carmarthen | 157 (Wales and Midlands) Transport Regiment RLC (V) |
| . | Squadron formed Troop at Llanelli from A Company 4 (V) Battalion The Royal Regiment of Wales | . |
| 1999 | Regiment redesignated 157 (Wales and Midlands) Logistic Support Regiment (V) | 157 (Wales and Midlands) Logistic Support Regiment (V) |
| 1999.07.01 | Llanelli detachment closed | . |
| 2006 | Regiment redesignated 157 (Wales and Midlands) Transport Regiment RLC (V) | 157 (Wales and Midlands) Transport Regiment RLC (V) |
| ?? | Regiment redesignated Welsh Transport Regiment RLC (V) | Welsh Transport Regiment RLC (V) |
| by 2008 | 224 (Pembroke Yeomanry) Transport Sqn (V) at Carmarthen with troop at Haverfordwest | . |
| ?? | Regiment redesignated 157 (Welsh) Transport Regiment RLC (V) | 157 (Welsh) Transport Regiment RLC (V) |
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