Mercian Regiment
| Dates | Locations | Higher Formation/Remarks |
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| . | 1st Battalion, The Mercian Regiment (Cheshire) | . |
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| 2007.09.01 | Formed by renaming 1st Battalion, The Cheshire Regiment | . |
| 2007.09 | England: Alma Barracks, Catterick: Light role Battalion | 4 Mechanised Brigade |
| . | Nov 07 - May 08: Iraq (Op Telic 11) | 4 Mechanised Brigade |
| 2008 | England: Marne Barracks, Catterick: Light role Battalion | 4 Mechanised Brigade |
| . | Apr - Oct 10: Afghanistan (Op Herrick 12) | 4 Mechanised Brigade |
| . | Oct 12 - Apr 13: Afghanistan (Op Herrick 17) | 4 Mechanized Brigade |
| 2014 | England: Bulford | . |
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| . | 2nd Battalion, The Mercian Regiment (Worcesters and Foresters) | . |
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| 2007.09.01 | Formed by renaming 1st Battalion Worcestershire and Sherwood Foresters Regiment | . |
| 2007.09 | England: Cavalry Barracks, Hounslow | London District |
| . | Apr - Oct 07: Afghanistan: Helmand Province: (Op Herrick 6) | 12 Mechanised Brigade |
| . | Apr - Oct 09: Afghanistan: Helmand Province: (Op Herrick 10) | 19 Light Brigade |
| 2008 | Northern Ireland: Palace Barracks, Holywood: Light role Battalion | 19 Light Brigade |
| . | Oct 11 - Apr 12: Afghanistan (Op Herrick 15) | 20 Armoured Brigade |
| 2014 | England: Chester | . |
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| . | 3rd Battalion, The Mercian Regiment (Staffords) | . |
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| 2007.09.01 | Formed by renaming 1st Battalion The Staffordshire Regiment | . |
| 2007.09 | England: Mooltan Barracks, Tidworth: Armoured Infantry role | 12 Mechanised Bde |
| 2009.08 | Germany: Lumsden Barracks, Fallingbostel: Armoured Infantry role | 7 Armoured Brigade |
| . | Apr - Oct 11: Afghanistan (Op Herrick 14) | 3 Commando Brigade |
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| . | will be removed from the ORBAT and absorbed into the rest of The Mercian Regiment on completion of Op HERRICK 19 and not before October 2014 | . |
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