15 Anti-Aircraft Brigade was formed in September 1941 on Gibraltar. It was formed to take command of all anti-aircraft units on the island. When the threat of air attack was reduced, 15 Anti-Aircraft Brigade was disbanded in February 1944.
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 41 | Formed Gibraltar |  | HQ Gibraltar |
| Feb 44 | Disbanded |
Order of Battle 1942
| 13 Heavy Anti-Aircraft Regiment (228 HAA Bty, 1 AA Z Troop, 1 Radar DF Bty) |
| 82 (Essex) Heavy Anti-Aircraft Regiment (156, 193, 256 Batteries & HAA Bty Gibraltar Defence Force) |
| 3 Light Anti-Aircraft Regiment (9, 114, 126 Batteries) |
| 3 Searchlight Battery |