Highland Regiment
| Dates | Locations | Higher Formation/Remarks |
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| . | 51st Highland Regiment | . |
| 1999.07.01 | Formed with HQ at Perth, by amalgamation of 3rd (V) Battalion, The Black Watch, 3rd (V) Bn, The Highlanders, and 7th/8th (V) Bn, The Argyll and Sutherland Highlanders | . |
| . | A (Black Watch) Company (serving as HQ Coy) at Dundee including Rifle and Mortar Pln; ATk Pln at Forfar and Rifle Pln at Kirkcaldy, redesignation of A Coy (and unofficially K Coy) 3rd Bn The Black Watch; Kirkcaldy element disbanded later | . |
| . | B (Highlanders) Company at Peterhead with sub-units at Aberdeen, Elgin and Keith, amalgamation of HQ Coy, B Coy and D Coy 3rd Bn The Highlanders | . |
| . | C (Highlanders) Company at Inverness with sub-units at Wick, Stornoway, Lovat Scouts Pln Kirkwall and Lerwick, SF and Assault Pioneer Pln attached, amalgamation of C Coy, detachment D Coy and Support Group 3rd Bn The Highlanders; Lerwick det transferred later to B Coy | . |
| . | D (Argyll and Sutherland Highlanders) Company at Dumbarton with Pln at Dunoon, redesignation of D Coy 7th/8th Bn The Argyll and Sutherland Highlanders | . |
| . | E (Argyll and Sutherland Highlanders) Company at Stirling with Pln at Cumbernauld, Assault Pioneer Pln attached, amalgamation of HQ Coy and B Coy 7th/8th Bn The Argyll and Sutherland Highlanders; Cumbernauld det transferred later to D Coy | . |
| 2006.03.28 | Redesignated 51st Highland, 7th Battalion The Royal Regiment of Scotland with HQ at Perth on formation of The Royal Regiment of Scotland | . |
| . | Companies reorganised: | . |
| . | HQ Company | . |
| . | A (Black Watch) Company at Dundee with plns at Kirkcaldy (newly raised) and Stirling (reduction of E Coy); Forfar element converted and transferred to C (Fife and Forfar Yeomanry/Scottish Horse) Sqn, Q O Yeomanry | . |
| . | B (Highlanders) Company at Aberdeen with dets at Peterhead, Keith and Lovat Scouts at Lerwick; Elgin det converted and transferred to 32 Sig Regt R Signals | . |
| . | C (Highlanders) Company at Inverness with sub-units at Wick, Stornoway; Lovat Scouts det at Kirkwall converted and transferred as Orkney Troop, 71 Engr Regt RE | . |
| . | D (Argyll and Sutherland Highlanders) Company at Dumbarton with det at Dunoon (Cumbernauld det disbanded) | . |
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