86 (Cornwall) Medium Regiment RA(TA) was converted from 56 (Cornwall) Heavy Anti-Aircraft Regiment RA(TA) in August 1944. It was initially designated B Medium Regiment but re-designated a week later as 85 Medium. The Regiment went into suspended animation in May 1946 and was reconstituted as 456 (Cornwall) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Aug 44 | Formed from 56 Heavy Anti-Aircraft Regiment | |
| Aug 44 | 9 Anti-Aircraft Brigade | Poona, India |
| Dec 44 | RA Training HQ 40 | Ranchi, India |
| Jul 45 | 59 Army Group RA | India |
Batteries
| Jul 44 | 165, 201 |
