81 Anti-Aircraft Brigade was formed in April 1943 in the Middle East. Originally under British Troops Egypt, they moved to Palestine in June. In April 1944 they passed to 9 Army control. The Brigade disbanded in July 1944 at Almaza. Nothing further is known at this time.
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.
| Apr 43 | Formed in Middle East | ||
| Apr 43 | Egypt |  | British Troops Egypt |
| Jun 43 | Palestine |  | GHQ Palestine |
| Apr 44 | Palestine |  | 9 Army |
| Jul 44 | Disbanded in Egypt |