139 Light Anti-Aircraft Regiment RA (TA) was formed in July 1942 at South Collingham. The Regiment Served in Anti-Aircraft Command until transferred to 2 Army to prepare for D Day. It went to Normandy in June 1944 and was employed in coastal defence. 139 Light Anti-Aircraft Regiment RA (TA) was disbanded in May 1945.
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.
| Jul 42 | Formed from batteries from 84, 134 & 135 Light Anti-Aircraft Regiments |
Collingham, Nottinghamshire, UK | |
| Jul 42 |  |
5 Anti-Aircraft Division, 5 Anti-Aircraft Brigade | South Coast, UK |
| Mar 44 |  |
2 Army | UK |
| Jun 44 | |
2 Army, 80 Anti-Aircraft Brigade | Normandy, France |
| Aug 44 | |
2 Army, 105 Anti-Aircraft Brigade | Port en Bessin, France |
| Oct 44 | |
2 Army, 103 Anti-Aircraft Brigade | Dieppe, France |
| May 45 | Disbanded |
Batteries
| Jul 42 | 94, 177, 230 |
| Feb 44 | 177, 230 |