94 Anti-Aircraft Regiment RA(TA) was formed at Turnhouse, Edinburgh in April 1939. It was re-designated as 94 Heavy Anti-Aircraft Regiment RA(TA) in June 1940. The Regiment was placed in suspended animation in July 1944 and reconstituted as 494 (City of Edinburgh) (M) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Apr 39 | 36 Anti-Aircraft Brigade, 3 Anti-Aircraft Division | Edinburgh, UK |
| Jan 41 | War Office Reserve | UK |
| Jun 41 | 12 Anti-Aircraft Brigade, Western Desert Force | Mersa Matruh, Egypt |
| Sep 41 | 12 Anti-Aircraft Brigade, 8 Army | Sidi Barrani, Egypt |
| Nov 41 | 12 Anti-Aircraft Brigade | Gambut, Libya |
| Jan 42 | 12 Anti-Aircraft Brigade | Msus, Libya |
| May 42 | 12 Anti-Aircraft Brigade | Gazala, Libya |
| Jul 42 | 12 Anti-Aircraft Brigade | El Alamein, Egypt |
| Jan 43 | 12 Anti-Aircraft Brigade | Tripoli, Libya |
| Jul 44 | Suspended animation |
Batteries
| Apr 39 | 228, 291, 292 |
| May 41 | 261 (London Transport), 291, 292 |
| Sep 42 | 291, 292 |
| Jan 43 | 261, 291, 292 |
