13 Medium Regiment RA was formed in January 1943 from disbanded Super Heavy Batteries and Defence Troops at Overton Park, Tonbridge. It was organised with two batteries. In February 1946 the Regiment was disbanded in the UK.
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.
| Jan 43 | Formed from RA units | Tonbridge, Kent, UK | |
| Jan 43 | Home Forces | UK | |
| May 44 |  |
2 Army | UK |
| Jun 44 | 3 Army Group RA | NW Europe |
Batteries
| Jan 43 | 89, 90 |