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 in January 1939. In June 1940 it was it became 75 (Home Counties)(Cinque Ports) Heavy Anti-Aircraft Regiment RA (TA). It served in the UK until moving to the Middle East in August 1942. The Regiment was placed in suspended animation in July 1944. 75 (Home Counties)(Cinque Ports) Heavy Anti-Aircraft Regiment RA (TA) was reconstituted as 259 (Home Counties)(Cinque Ports) Heavy Anti-Aircraft Regiment RA (TA) in January 1947.
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.
| Sep 39 |  |
6 Anti-Aircraft Division, 28 Anti-Aircraft Brigade | Kent, UK |
| Nov 40 |  |
10 Anti-Aircraft Division, 62 Anti-Aircraft Brigade | Leeds, Yorkshire, UK |
| Aug 41 | |
6 Anti-Aircraft Division, 37 Anti-Aircraft Brigade | 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) |
Gun Sites Occupied
? Battery
| Dates | Sites | Gun Defended Area |
| 1939 – Oct 40 | D1 Farthingloe | Dover |