17th/21st Lancers
| Dates | Locations | Higher Formation/Remarks |
| . | . | . |
| . | 17th/21st Lancers | . |
| . | . | . |
| 1945.05 | Austria | Tank Regt |
| 1946.10 | Greece | . |
| 1947.10 | Suez Canal Zone | Armoured Car Regiment |
| 1947.01? | Palestine: Tiberius | . |
| 1948 | England: Catterick | RAC Training Regt |
| 1951.12 | Germany: York Barracks, Munster | 20 Armoured Brigade |
| 1957.08 | Germany: Barker Barracks, Paderborn | 4 Guards Brigade Group |
| 1959.12 | England: Piddlehinton | . |
| . | Feb 60: Sailed on HMT 'Oxfordshire' | . |
| 1960.03 | Hong Kong: Sek Kong Camp, New Territories | . |
| 1961.10 | Aden: Falaise Lines (HQ, A Sqn & B Sqn) (A & B Sqns rotating on LSTs in Persian Gulf) | Tank Regt Centurion |
| . | C Sqn: Hong Kong: Sek Kong Camp, New Territories | . |
| . | Oct 62: HQ, A Sqn & B Sqn sailed on HMT 'Nevasa' for England | . |
| 1962.10 | England: Aliwal Barracks, Tidworth? Carlisle? For 6 weeks leave | . |
| 1962.12 | Germany: Athlone Barracks, Sennelager | 20 Armoured Brigade Group |
| . | Jan 63: C Sqn rejoins regiment | . |
| 1968.03 | Northern Ireland: Lisanelly Barracks, Omagh | . |
| . | 1970: B Sqn - Libya | . |
| 1971.11 | Germany: | . |
| . | 5 Oct - 7 Feb 73: Northern Ireland, Gosford Castle: A Squadron | . |
| 1972.11 | Germany: Northampton Barracks, Wolfenbuttel | 4 Armoured Brigade |
| . | 7 Feb - 5 Jun 73: Northern Ireland, Gosford Castle: B Squadron | . |
| . | 5 Jun - 3 Oct 73: Northern Ireland, Gosford Castle: C Squadron | . |
| . | 1 Aug - 2 Dec 73: Northern Ireland, Ballykelly: Air Squadron | . |
| 1974.10 | Germany: Wessex Barracks, Fallingbostel | 11 Armoured Brigade |
| . | 3 Nov 75 - 3 Mar 76: Northern Ireland, City Centre/Markets | . |
| 1977.12 | England: Bovington Camp | RAC Centre Regiment |
| 1980.11 | Germany: Swinton Barracks, Munster | . |
| . | 1 Jan 81: Joined 4 Armoured Brigade | 4 Armoured Brigade |
| . | 5 Dec 82 - 17 Feb 83: Northern Ireland, Maze: A Squadron | . |
| . | 1985: Equipped with Challenger | . |
| 1987 | England: Cambrai Barracks, Catterick?? | Tank Training Regt |
| 1990.11 | England: Bhurtpore Barracks, Tidworth: Tank role | 1 Inf Brigade |
| . | 25 June 1993: Amalgamated with 16th/5th The Queen's Royal Lancers, to form The Queen's Royal Lancers | . |
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