40 Squadron
| Dates | Location | Higher Formation / Notes |
| 40 Field Squadron | ||
| 1950.01 | Wales: Cwrt-y-Gollen Camp, Crickhowell | 73 Field Sqn renumbered 40 Field Sqn 37 Army Engineer Regiment |
| 1950.11 | Germany: Roberts Barracks, Osnabruck | 37 Army Engineer Regiment |
| 1955.11 | Cyprus | 37 Field Engineer Regiment |
| Nov 59: Disbanded | ||
| 40 SME Squadron | ||
| 1960.02 | England: Hoo, Chatham | C Sqn 12 SME Regt renamed 40 SME Sqn: 12 SME Regiment |
| 1961 | England: Gordon Barracks, Gillingham | 12 SME Regiment |
| Jul 62: 18 and 40 RSME amalgamated to form 18/40 RSME Squadron | ||
| 40 RSME Squadron | ||
| 1969.11 | England: Chattenden | Reformed: 12 RSME Regiment |
| 1973: Disbanded | ||
| 40 Plant Support Squadron | ||
| 1977.08 | England: Chattenden | Reformed: 12 RSME Regiment |
| 1994: Disbanded | ||
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