75 (Home Counties)(Cinque Ports) Anti-Aircraft Brigade RA(TA) was formed in November 1938 by conversion of 59 Field Brigade RA(TA). It was re-designated as 75 (Home Counties)(Cinque Ports) Anti-Aircraft Regiment RA(TA) in January 1939. In June 1940 it was re-designated as Heavy Anti-Aircraft. The Regiment was placed in suspended animation in July 1944 and was reconstituted as 259 (Home Counties)(Cinque Ports) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Sep 39 | 28 Anti-Aircraft Brigade, 6 Anti-Aircraft Division | Kent, UK |
| Nov 40 | 62 Anti-Aircraft Brigade, 10 Anti-Aircraft Division | Leeds, Yorkshire, UK |
| Aug 41 | 37 Anti-Aircraft Brigade, 6 Anti-Aircraft Division | Kent, UK |
| Apr 42 | War Office Reserve | UK |
| Aug 42 | Persia & Iraq Command (PAI Force) 4 Anti-Aircraft Brigade |
Iraq |
| Sep 42 | 223 Battery detached to Bahrain | Bahrain |
| May 44 | Middle East Command 4 Anti-Aircraft Brigade |
Iraq |
| Jul 44 | Suspended animation |
Batteries
| Sep 39 | 223 (Cinque Ports), 233 (Kent), 306 |
| Jul 41 | 223, 233, 306, 422 |
| Mar 42 | 223, 233, 306 |
| Sep 42 | 223 Battery to Bahrain |
| Jan 43 | 1 Troop, 223 Battery to Abadan, Persia (Iran) |
| Apr 43 | BHQ & 2 Troop to Abadan, Persia (Iran) |
