1st Battalion The Royal Welsh (The Royal Welch Fusiliers)
| Dates | Locations | Higher Formation | Remarks |
| | | |
| 2006.03.01 | Formed by renaming 1st Battalion The Royal Welch Fusiliers | | |
| 2006.03 | England: Mons Barracks, Aldershot | | |
| 2006.04 | Cyprus: Salamanca Barracks, Episkopi | | |
| May - Nov 07: Iraq (Op Telic 10) 1 Company only | 1 Mechanised Brigade | |
| | Oct 07 - Apr 08: Kabul, Afghanistan | Afghan Roulement Inf Bn | |
| 2008 | England: Dale Barracks, Chester | | Armoured Infantry role |
| Oct 09 - Apr 10: Afghanistan: Helmand Province: (Op Herrick 11) | 11 Light Brigade | |
| | | |
2nd Battalion The Royal Welsh (The Royal Regiment of Wales)
| Dates | Locations | Higher Formation | Remarks |
| | | |
| 2006.03.01 | Formed by renaming 1st Battalion The Royal Regiment of Wales | | |
| 2006.03 | England: Lucknow Barracks, Tidworth | 12 Brigade | Armoured Infantry role |
| May - Nov 07: Iraq (Op Telic 10) | 1 Mechanised Bde | |
| | | |
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