171 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was formed at Cardiff in August 1942. It became a non-mixed unit in August 1945. The Regiment served with Anti-Aircraft Command for its entire war. 171 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was considered a new War Formed Regiment in January 1947 and in the April was re-designated 102 Heavy Anti-Aircraft Regiment RA.
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.
|Aug 42||Formed||Cardiff, UK|
|Aug 42||3 Anti-Aircraft Group, 45 Anti-Aircraft Brigade||South Wales, UK|
|Nov 44||1 Anti-Aircraft Group, 26 Anti-Aircraft Brigade||South East England|
|Dec 44||1 Anti-Aircraft Group, 48 Anti-Aircraft Brigade||South East England|
|Aug 45||Became 171 Heavy Anti-Aircraft Regiment
(No longer mixed)
|Aug 42||474 (Mixed), 496 (Mixed)|
|Oct 42||474 (M), 496 (M), 569 (M), 580 (M)|
|May 43||474 (M), 496 (M), 569 (M)|
|Dec 44||474 (M), 496 (M)|
|Jan 45||474 (M), 496 (M), 500 (M)|