13 Light Anti-Aircraft Regiment RA (TA) was formed with two batteries at Hillsborough in July 1938. The Regiment was placed in suspended animation in February 1946 and resusitated as 13 Light Anti-Aircraft/Searchlight Regiment, as a cadre in March 1946. It was re-designated 117 Light Anti-Aircraft/Searchlight Regiment RA as a war formed unit and the original TA unit, 13 Light Anti-Aircraft Regiment RA (TA), re-constituted as 513 Light Anti-Aircraft/Searchlight Regiment RA (TA) in early 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 |  |
7 Anti-Aircraft Division, 57 Anti-Aircraft Brigade | Sheffield, Yorkshire, UK |
| Nov 40 |
|
British Troops Egypt 122 Battery detached to Greece |
Mersa Matruh, Egypt |
| Dec 40 |  |
7 Armoured Division | Egypt |
| Feb 41 | |
7 Armoured Division | Derna, Libya |
| Jun 41 | 4 Anti-Aircraft Brigade – Tobruk Garrison | Tobruk, Libya | |
| Oct 41 | RHQ Tobruk, 37 & 38 Batteries in Egypt | Tobruk & Alexandria, Egypt | |
| Dec 41 |  |
8 Army | N Africa |
| Aug 42 |  |
9 Army | Palestine |
| Jan 43 | |
8 Army | N Africa |
| Sep 43 |  |
US 5 Army, 12 Anti-Aircraft Brigade | Salerno, Italy |
| Sep 43 |  |
Allied Forces HQ, 22 Anti-Aircraft Brigade | Salerno, Italy |
| Apr 44 | |
Allied Forces HQ, 8 Anti-Aircraft Brigade | Italy |
| Jan 45 | |
Allied Forces HQ, 22 Anti-Aircraft Brigade | Italy |
| Apr 45 | |
Allied Forces HQ, 66 Anti-Aircraft Brigade | Italy |
Batteries
| Sep 39 | 37, 38, 122 (Mobile) |
| Nov 40 | 37, 38, 155 (under command) – 122 detached to Greece |
| Dec 41 | 37, 38, 122 |