12 Regiment
| 12 Drafting Regiment | ||
| Dates | Location | Sub-units - Remarks |
| 1947 | England: Barton Stacey | Formed from 2 Drafting Bn |
| 1948: Absorbed 13 Holding Regiment as RE Depot. | ||
| 12 SME Regiment | ||
| 1948 | England: Brompton Barracks, Chatham | Reformed |
| 1955: Absorbed 11 Regiment and renamed 11/12 SME Regiment | ||
| 11/12 SME Regiment | ||
| 1955 | England: Brompton Barracks, Chatham | |
| 1957: Renumbered 12 SME Regiment. | ||
| 12 SME Regiment | ||
| 1957 | England: Brompton Barracks, Chatham | A, B, C & D SME Sqns |
| Feb 60: A Sqn became 18 SME Sqn and C Sqn became 40 SME Sqn | B, D, 18 & 40 SME Sqns | |
| Dec 60: D Sqn became 17 SME Sqn | B, 17, 18 & 40 SME Sqns | |
| 1961.12 | England: Gordon Barracks, Gillingham, less 18 SME Sqn to Kingshill Barracks, Hoo | B, 17, 18 & 40 SME Sqns |
| Dec 61: B Sqn disbanded | 17, 18 & 40 SME Sqns | |
| 1962 SME granted ‘Royal’ title, regt became 12 RSME Regt, Sqns became RSME Sqns. | 17, 18 & 40 RSME Sqns | |
| Nov 65: 18 and 40 RSME amalgamated to form 18/40 RSME Sqn | 17, 18/40 RSME Sqns | |
| 1966.08 | England: Chattenden | 17, 18/40 RSME Sqns |
| Sep 68: 24 Fd Sqn joined from 36 Regt | 17, 18/40 RSME Sqns, 24 Fd Sqn | |
| Nov 69: 18/40 RSME Squadrons became 18 RSME Squadron and 40 RSME Squadron was reformed | 17, 18 & 40 RSME Sqns, 24 Fd Sqn | |
| 1973: 40 RSME Sqn disbanded. | 17 & 18 RSME Sqns, 24 Fd Sqn | |
| 1977: 17 RSME Sqn became Transportation Support Unit for Chatham, with an RCT officer commanding. | ||
| Aug 77: 40 Plant Support Sqn formed | 17 & 18 RSME Sqns, 24 Fd Sqn, 40 Plant Support Sqn | |
| 1980: Sub-units | 17 & 18 RSME, 40 Plant Sp & 24 Fd Sqns | |
| 1994: Amalgamated with Depot Regt to form 1 RSME Regt: 24 Sqn renamed 24 Training Support Squadron: 17 & 18 RSME, 40 Plant Sp Sqns disbanded. | ||
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