68 (Monmouthshire Regiment) Searchlight Regiment RA (TA) formed in August 1940 by the transfer of 1st (Rifle) Battalion The Monmouthshire Regiment (68 Searchlight Regiment) (TA) to the RA. The Regiment was converted to 68 Garrison Regiment in November 1944 and to 609 Infantry Regiment RA in February 1945. It was re-constituted as 603 (1st (Rifle) Battalion The Monmouthshire Regiment) (Mixed) 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.
| Nov 38 | 1st Monmouthshire Regiment (68 Searchlight Regiment) |
Newport, Monmouthshire, UK | |
| Sep 39 |  |
5 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | Bristol, UK |
| Jul 40 | |
5 Anti-Aircraft Division, 5 Anti-Aircraft Brigade | Gloucestershire, UK |
| Aug 40 | Became RA | ||
| Nov 40 |  |
9 Anti-Aircraft Division, 5 Anti-Aircraft Brigade | Gloucestershire, UK |
| May 41 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | Bristol, UK |
| Jul 41 | |
8 Anti-Aircraft Division, 69 Anti-Aircraft Brigade | Bristol, UK |
| Oct 42 |  |
3 Anti-Aircraft Group, 69 Anti-Aircraft Brigade | Bristol, UK |
| Mar 43 | |
3 Anti-Aircraft Group, 46 Anti-Aircraft Brigade | Bristol, UK |
| Nov 44 | Became 68 Garrison Regiment RA |
Batteries
| Aug 40 | 453, 454, 455 |