3 Regiment
| Dates | Location | Higher Formation / Notes |
| 3 Training Regiment | ||
| 1947 | England: Cove, Aldershot | Formed 1947 at Cove from 3 Trg Battalion A, B and C Trg Sqns |
| Nov 60: C Sqn disbanded | ||
| Dec 60: A and B Sqns disbanded | ||
| 1961: HQ Sqn disbanded. Regiment and HQ Sqn amalgamated with 4 Trg Regiment. | ||
| 1968 | England: Southwood Camp, Cove | |
| 1968: 1 Trg Regt reorganized and 3 Trg Regt reformed, 56 (MT) Sqn and 57 Trg Sqn transferred to 3 Trg Regiment from 1 Regt. | ||
| 1972: HQ Sqn became HQ Troop | ||
| 1977: 55 Trg Sqn transferred from 1 Trg Regt and 56 (MT) Sqn transferred to 1 Trg Regt. | ||
| 1979 | England: Gibraltar Barracks, Camberly | HQ Tp, 55 & 57 Trg Sqns |
| 1981: 63 Trg Support Sqn formed. | ||
| 3 Royal School of Military Engineering Regiment | ||
| 1994 | England: Gibraltar Barracks, Camberly | |
| Formed by amalgamation of 1 and 3 Training Regiments | 27HQ, 55 & 57 Trg Sqns, 63 Trg Sp sqn | |
| C2007 | England: Gibraltar Barracks, Camberly | 55 & 67 Trg Sqns, 63 Trg Sp Sqn |
| 3 Armoured Division Engineer Regiment | ||
| 1978.01 | Germany: Corunna Barracks, Iserlohn | Formed by redes of 26 Engineer Regiment 5, 25 and 30 Fd Sqns and 2 Fd Sp Sqn. |
| 29 Jul - 29 Nov 78: Northern Ireland Tour: Lurgan/HMP Maze | Infantry Role: | |
| Jan - Apr 80: Northern Ireland Tour: | ||
| 1982: Renamed 26 Engineer Regiment | ||
Previous page: 2 Regiment
Next page: 4 Regiment