177 Heavy Anti-Aircraft Regiment RA (TA) was formed at Burlesdon near Southampton in November 1942. The Regiment served with Anti-Aircraft Command for its entire existence. 177 Heavy Anti-Aircraft Regiment RA (TA) was re-designated as 12 Heavy Anti-Aircraft Regiment RA in May 1944 (see below) and 12 HAA re-designated as 177 HAA Regiment. Two days later the new 177 HAA began disbandment at Shildon, Darlington.
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.
| Nov 42 | Formed | Southampton, Hampshire, UK | |
| Nov 42 |  |
2 Anti-Aircraft Group, 35 Anti-Aircraft Brigade | South East England |
| May 43 | |
Anti-Aircraft Command attached 103 Anti-Aircraft Brigade |
Cornwall |
| Jul 43 | |
6 Anti-Aircraft Group, 57 Anti-Aircraft Brigade | UK |
| May 44 | Regiment swapped with 12 Heavy Anti-Aircraft Regiment, RHQ became 12 HAA, 598 & 600 Btys became 4 & 18 Btys, 360 Bty remained the same. 12 HAA became 177 HAA, 4 & 18 Btys became 598 & 600 Btys, 203 Bty remained the same |
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| May 44 | |
6 Anti-Aircraft Group, 44 Anti-Aircraft Brigade | |
| Jun 44 | Disbanded | Darlington, Co. Durham, UK | |
Batteries
| Nov 42 | 596, 598, 600 |
| Aug 43 | 600 |
| Sep 43 | 360, 600 |
| May 44 | 360, 598, 600 |
| Jun 44 | 203, 598, 600 |