Dorset Yeomanry
| Date | Unit | Higher Formation |
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| . | 294 (Queen's Own Dorset Yeomanry) Field Regiment RA (TA) | . |
| 1.1.47 | Reconstituted in TA with HQ at Sherborne, Dorset: Continuity with 94 (Queen's Own Dorset Yeomanry) Field Regiment | 43 (WX) Inf Div |
| 1.7.50 | Amalgamated with 341 Regiment as 294 (Queen's Own Dorset Yeomanry) Field Regiment RA (TA) | . |
| 1.5.61(LG 1.4.61) | Amalgamated with 255 Regiment as 250 (Queen's Own Dorset and West Somerset Yeomanry) Medium Regiment RA (TA) | . |
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| . | 341 (Queen's Own Dorset Yeomanry) Medium Regiment RA (TA) | . |
| 1.1.47 | Reconstituted in TA with HQ at Sherborne, Dorset: Continuity with 141 (Queen's Oum Dorset Yeomanry) Field Regiment [dup of 94th] | 90 (Fd) AGRA (TA) |
| 1.7.50 | Amalgamated with 294 Regiment as 294 (Queen's Own Dorset Yeomanry) Field Regiment RA (TA) | . |
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| . | 250 (Queen's Own Dorset and West Somerset Yeomanry) Medium Regiment RA (TA) | . |
| 1.5.61 (LG 1.4.61) | Formed by amalgamation of 255 and 294 Regiments as 250 (Queen's Own Dorset and West Somerset Yeomanry) Medium Regiment | . |
| 4.10.61 | Title Medium omitted. | . |
| 18.3.64 | Title Medium restored | . |
| 1967.04.01 | Disbanded and concurrently reconstituted as: | ÃÂ |
| . | C Company (Dorset), Wessex Volunteers at Dorchester with Pln at Poole, successor to 4th Bn The Dorset Regt and elements 294 (Dorset Yeomanry) Field Regt RA; det formed 1971 at Wallisdown | Wessex Volunteers |
| 1971.04.01 | Wessex Volunteers renamed 1st Battalion, Wessex Volunteers HQ at Trowbridge; redesignated on formation of 2nd Battalion | 1st Battalion, Wessex Volunteers |
| 1971 | Company subtitles omitted | . |
| 1972.03.30 | Renamed 1st Battalion, The Wessex Regiment (Rifle Volunteers) | . |
| 1975.04.01 | Companies reorganised: D Coy at Reading and Swindon transferred as D Company 2nd Battalion | . |
| . | D (Queen's Own Dorset Yeomanry) Company at Poole (det at Bournemouth), redesignation of D Coy, 2nd Battalion (plus a pln from C Company, 1st Bn) | . |
| 1992.06 | Battalion reduced to three rifle company order of battle: | . |
| . | D Company at Poole transferred as D Company 4th Bn, The Devonshire and Dorset Regiment, losing its Queen's Own Dorset Yeomanry affiliation | . |
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| . | The Dorset Yeomanry | . |
| 1997.04.01 | Formed at Bovington as Armoured Replacement Regiment, a new regiment in Royal Armoured Corps, not inheriting previous lineage and battle honours of the QODY, but wearing its cap badge | . |
| 1999.07.01 | Regiment disbanded as result of the Strategic Defence Review and redesignated as A (Dorset Yeomanry) Squadron, The Royal Wessex Yeomanry at Barnstaple (4 Troop at Paignton) | . |
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