73 Medium Regiment RA was formed from a cadre from 68 Medium Regiment RA (TA) with two batteries in January 1940. In September 1941 in converted to 95 Anti-Tank Regiment with four batteries. The Regiment reverted to 73 Medium Regiment RA with two batteries in April 1944 and was disbanded in September 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.
| Jan 40 | Formed from cadre 68 Medium Regiment | Tarporley, Cheshire, UK | |
| Jan 40 | Home Forces | UK | |
| Sep 41 | Became 95 Anti-Tank Regiment | Egypt | |
| Apr 44 | Reverted to 73 Medium Regiment | ||
| Apr 44 |  |
Middle East Forces | N Africa |
| Oct 44 |  |
8 Army | Italy |
| Sep 45 | Disbanded |
Batteries
| Jan 40 | A, B |
| Apr 44 | 282, 311 |