Welch Regiment
| Dates | Locations | Higher Formation/Remarks |
| . | . | . |
| . | . | . |
| . | 4th (Carmarthenshire) Battalion, The Welch Regiment | . |
| 1947.04.01 | Reconstituted in TA with HQ at Llanelli | . |
| 1967.04.01 | Disbanded and concurrently reconstituted as two units: | . |
| . | Part of C Company (Welch), Welsh Volunteers, in TAVR II at Pontypridd and Bridgend, with no actual representation in Pembroke, Cardigan or Carmarthen | . |
| . | 4th (Territorial) Battalion, The Welch Regiment in TAVR III with HQ at Carmarthen: | . |
| . | A Company (Pembroke Yeomanry) at Haverfordwest, successor to The Pembroke Yeomanry RAC | . |
| . | B Company at Carmarthen, successor to 4th Battalion The Welch Regiment | . |
| . | C Company at Swansea, successor to 4th Battalion The Welch Regiment | . |
| 1969.04.01 | TAVR III element reduced to cadre as 4th Battalion, The Welch Regiment at Llanelli sponsored by 157 Transport Regiment RCT, less A Coy reorganised as 224 (Pembroke Yeomanry) Squadron, 157 Transport Regiment RCT | . |
| 1969.06.11 | Transferred to the corps of The Royal Regiment of Wales | . |
| <1971.03> | Cadre redesignated 4th (Carmarthenshire and Pembrokeshire) Battalion, The Royal Regiment of Wales | . |
| 1971.04.01 | Reorganised as two companies, reconstituted from cadre: | . |
| . | HQ Company at Llanelli | . |
| . | A Company at Llanelli | . |
| 1987.12 | Bn HQ and HQ Coy moved to Swansea | . |
| 1993.10.01 | Amalgamated with 3rd (Volunteer) Battalion, to form 2nd (Volunteer) Battalion, with no remaining presence in Pembroke, Carmarthen and Cardigan | . |
| . | . | . |
| . | . | . |
| . | 5th (Glamorgan) Battalion, The Welch RegimentÃÂ | . |
| 1947.01.01 | Reconstituted in the T.A. with HQ at Pontypridd, and concurrently amalgamated with duplicate 2/5th Battalion | 160 (South Wales) Infantry Brigade |
| 1967.04.01 | Disbanded and concurrently amalgamated with 6th Battalion, The Welch Regiment, to form TAVR infantry elements for Glamorganishire | . |
| . | HQ Company, Welsh Volunteers, in TAVR II at Cardiff, successor to 6th Battalion | . |
| . | Part of C Company (Welch), Welsh Volunteers, in TAVR II at Pontypridd and Bridgend, successor to 5th Battalion | . |
| . | 5th/6th (Territorial) Battalion, The Welch Regiment in TAVR III with HQ at Pontypridd | . |
| . | A Company at Cardiff, successor to 6th Battalion | . |
| . | B Company at Bridgend, successor to 5th Battalion | . |
| 1969.01.01 | TAVR III element reduced to cadre as 5th/6th Battalion, The Welch Regiment at Pontypridd, sponsored by Welsh Volunteers | . |
| 1969.06.11 | Transferred to the corps of The Royal Regiment of Wales | . |
| c1971.03 | Cadre redesignated as 5th/6th (Glamorgan) Battalion, The Royal Regiment of Wales | . |
| 1971.04.01 | Reorganised as four companies with no further explicit Glamorganshire designation: | . |
| . | HQ Company, 3rd (Volunteer) Battalion The Royal Regiment of Wales (24th/41st Foot) at Maindy Barracks, Cardiff (ATk Pln at Pentre and Mortar Pln at Cwmcarn), redesignation of HQ Company Welsh Vols | . |
| . | C Company, 3rd (Volunteer) Battalion The Royal Regiment of Wales (24th/41st Foot) at Pontypridd (Pln at Pentre), redesignation of C Company Welsh Volunteers and cadre 5th/6th Battalion | . |
| . | B Company, 4th (Volunteer) Battalion The Royal Regiment of Wales (24th/41st Foot) raised at Neath with Pln at Swansea | . |
| . | C Company, 4th (Volunteer) Battalion The Royal Regiment of Wales (24th/41st Foot) raised at Bridgend with Pln at Maesteg | . |
| 1985.04.01 | D (City of Swansea) Company formed at Swansea in 4th Battalion from Swansea pln B Company | . |
| 1987.12 | HQ and HQ Company 4th Battalion moved to Swansea | . |
| 1993.10.01 | 2nd (Volunteer) Battalion The Royal Regiment of Wales (24th/41st Foot) formed with Headquarters at Maindy Barracks, Cardiff by amalgamation of 3rd (Volunteer) Battalion and 4th (Volunteer) Battalion | . |
| . | Reduced to three companies: | . |
| . | HQ Company at Maindy Barracks, Cardiff, redesignation of HQ Company 3rd Battalion | . |
| . | A (Swansea) Company at Swansea with Pln at Llanelli, amalgamation of B Company, D Company and part of A Company 4th Battalion | . |
| . | C (Pontypridd) Company at Pontypridd (Pln at Pentre), redesignation of C Company 3rd Battalion | . |
| 1999.07.01 | Reduced to two companies as battalion amalgamated with 3rd (V) Battalion The Royal Welch Fusiliers to form The Royal Welsh Regiment | . |
| . | . | . |
| . | . | . |
| . | 16th (Welsh) Battalion, The Parachute Regiment | . |
| 1947.04.01 | Newly formed in T.A. with HQ at Cardiff | . |
| . | A Company | . |
| . | B Company | . |
| . | C Company | . |
| . | D Company | . |
| 1956.10.01 | Converted to infantry as 6th Battalion, The Welch Regiment with no lineal connection to prior 6th Battalion | . |
| 1967.04.01 | Disbanded and concurrently amalgamated with 5th (Glamorgan) Battalion, The Welch Regiment, to form TAVR infantry elements for Glamorganshire | . |
| . | . | . |
| . | . | . |
| . | The Royal Welsh Regiment | . |
| 1999.07.01 | Formed with Headquarters at Maindy Barracks, Cardiff. Successor to 3rd (Volunteer) Battalion The Royal Welch Fusiliers and 2nd (Volunteer) Battalion The Royal Regiment of Wales | . |
| . | A (Royal Welch Fusiliers) Company at Colwyn Bay with Pltn at Caernarfon. Formed by amalgamation of B Company and D Company 3rd Battalion The Royal Welch Fusiliers. | . |
| . | B (Royal Regiment of Wales) Company at Swansea. Formed by redesignation of A Company 2nd Battalion The Royal Regiment of Wales | . |
| . | C (Royal Regiment of Wales) Company at Maindy Barracks, Cardiff with Pltn at Pontypridd. Formed by amalgamation of 'HQ' Company and 'C' Company 2nd Battalion The Royal Regiment of Wales. | . |
| . | D (Royal Welch Fusiliers) Company at Wrexham with Pltn at Queensferry. Formed by amalgamation of 'HQ' Company and 'A' Company 3rd Battalion The Royal Welch Fusiliers. | . |
| . | Notes on support platoons the Royal Welch Fusiliers companies share a Recce and an Assault Pioneer Platoon, the Royal Regiment of Wales companies share Mortar and Anti-Tank Platoons | . |
| 2005 | Pln formed at Aberystwyth (in A Coy?) | . |
| 2006.03.01 | Redesignated 3rd Battalion, The Royal Welsh Regiment | . |
| . | HQ and HQ Company at Maindy Barracks, Cardiff | . |
| . | A (Royal Welch Fusiliers) Company at Hightown Barracks, Kingsmills Road, Wrexham with Pln at Queensferry | . |
| . | B (Royal Regiment of Wales) Company at Army Reserve Centre, Alamein Road, Morfa Swansea | . |
| . | C (Royal Regiment of Wales) Company at Maindy Barracks, Cardiff with Pln at Pontypridd | . |
| . | D (Royal Welch Fusiliers) Company at Army Reserve Centre, Groes Road, Colwyn Bay with Pln at Caernarfon | . |
| . | . | . |
| . | . | . |
Previous page: Worcestershire Regiment
Next page: West Midlands Regiment