15 Medium Regiment RA was formed at Blandford by conversion of coast artillery units in February 1943. It was organised with two batteries. The Regiment disbanded in January 1945.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| Feb 43 | Formed from coast artillery | Blandford, Dorset, UK | |
| Feb 43 | Home Forces | UK | |
| May 44 |  |
2 Canadian Army Group RCA | UK |
| Jun 44 | |
2 Canadian Army Group RCA | NW Europe |
| Jan 45 | Disbanded |
Batteries
| Feb 43 | 124, 125 |