73 (Kent Fortress) Searchlight Regiment RA(TA) formed in August 1940 by the transfer of 73 (Kent Fortress) Anti-Aircraft Battalion Royal Engineers (TA) to the RA. The Regiment was placed in suspended animation in September 1944. It was re-constituted as 608 (Mixed) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Apr 39 | 73 Anti-Aircraft Battalion Royal Engineers | Bexley, London,UK |
| Aug 40 | 56 Light Anti-Aircraft Brigade | Kent, UK |
| Aug 40 | Became RA | |
| Oct 42 | 56 Light Anti-Aircraft Brigade, 2 Anti-Aircraft Group | Kent, UK |
| Feb 43 | 27 Anti-Aircraft Brigade | South Coast England |
| Apr 43 | 56 Light Anti-Aircraft Brigade | Kent, UK |
| Sep 44 | Suspended animation |
Batteries
| Sep 39 | 322, 331, 347 |
| Jan 42 | 322, 331, 347, 508 |
| Jul 43 | 322, 331, 508 |
