119 Heavy Anti-Aircraft Regiment RA (TA) was formed at Ty Croes, Anglesey in December 1940. The Regiment served in Anti-Aircraft Command for the entire war including a 2 year spell in Orkney. 119 Heavy Anti-Aircraft Regiment RA (TA) was disbanded in May 1945 at Churchmead House, Datchet, Buckinghamshire.
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.
| Dec 40 | Formed | Ty Croes, Anglesey, UK | |
| Dec 40 |  |
1 Anti-Aircraft Division, 26 Anti-Aircraft Brigade | London, UK |
| April 41 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | Falmouth, Cornwall, UK |
| Jun 41 | |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | Bristol, UK |
| Dec 41 | |
8 Anti-Aircraft Division, 64 Anti-Aircraft Brigade | South West England |
| Jun 42 |  |
11 Anti-Aircraft Division, 67 Anti-Aircraft Brigade | Birmingham, UK |
| Jun 42 |  |
9 Anti-Aircraft Division, 67 Anti-Aircraft Brigade | South Wales |
| Sep 42 |  |
Orkney & Shetland Defences (OSDEF) | Orkney, UK |
| Oct 44 |  |
9 Anti-Aircraft Group, 40 Anti-Aircraft Brigade | Thames Estuary, UK |
| Nov 44 | |
1 Anti-Aircraft Group, 5 Anti-Aircraft Brigade | East Anglia, UK |
| Dec 44 | |
2 Anti-Aircraft Group, 102 Anti-Aircraft Brigade | East Anglia, UK |
Batteries
| Dec 40 | 372, 377, 378 |
| Mar 41 | 372, 377, 378, 396 |
| Oct 41 | 372, 377, 378 |
| Nov 41 | 372, 377, 378, 464 |
| May 42 | 372, 377, 378 |
| Jul 42 | 372, 377, 378, 406 |
| Feb 44 | 372, 377, 378 |