19 Light Anti-Aircraft Regiment RA (TA) was formed at Ediburgh, in December 1938. The Regiment was placed in suspended animation in January 1947. It was re-designated as 90 Light Anti-Aircraft Regiment RA and the TA unit, 19 Light Anti-Aircraft Regiment RA (TA), re-constituted as 519 (Dunedin) Light Anti-Aircraft/Searchlight 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.
| Sep 39 |  |
Scottish Command | Edinburgh, UK |
| Nov 40 |  |
Orkney & Shetland Defences | Orkney, UK |
| Jun 41 |  |
3 Anti-Aircraft Division, 36 Anti-Aircraft Brigade | Scotland |
| Apr 42 |  |
54 Infantry Division | UK |
| Sep 42 | Home Forces | UK |
Batteries
| Sep 39 | 59, 60 |
| Jul 40 | 60 |
| Oct 41 | 60, 263, 290 |
| Feb 42 | 60, 290 |
| Oct 42 | 60, 104, 290 |
| May 43 | Batteries disbanded on formation of 1-6 Composite LAA/Searchlight Batteries |
| May 44 | 221, 263, 294 |