73 Anti-Aircraft Brigade RA (TA) was formed in October 1937 by the conversion of part of 62 (North Midland) Field Brigade RA (TA). It was re-designated as 73 Anti-Aircraft Regiment in January 1939. In June 1940 it became 73 Heavy Anti-Aircraft Regiment RA (TA). The Regiment Served with the BEF in France in 1939. On return it was part of Anti-Aircraft Command, moving to the Middle East in April 1942. It then moved to Sicily and Italy. 73 Heavy Anti-Aircraft Regiment RA (TA) was placed in suspended animation in March 1945 and was reconstituted as 473 (North Midland) Heavy Anti-Aircraft 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 |  |
4 Anti-Aircraft Division, 34 Anti-Aircraft Brigade | Coventry, Warwickshire, UK |
| Nov 39 | 12 Anti-Aircraft Brigade | Chouilly, France | |
| Jun 40 | 12 Anti-Aircraft Brigade | Saint-Nazaire, France | |
| Jun 40 | Home Forces | Aberporth, Dyfed, UK | |
| Jul 40 |  |
7 Anti-Aircraft Division, 43 Anti-Aircraft Brigade | Middlesbrough, Yorkshire, UK |
| May 41 |  |
12 Anti-Aircraft Division, 42 Anti-Aircraft Brigade | Clydeside, Glasgow, UK |
| Aug 41 |  |
War Office Reserve | UK |
| Apr 42 |  |
Middle East Forces | Egypt |
| Feb 43 | 209 & 210 Batteries “diluted“with African Pioneer Corps men |
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| Mar 43 | |
Middle East Forces | Alexandria, Egypt |
| Jun 43 |  |
8 Army, 18 Anti-Aircraft Brigade | Suez, Egypt |
| Jul 43 | |
8 Army, 62 Anti-Aircraft Brigade | Syracuse, Sicily |
| Jan 44 |  |
Allied Forces HQ, 73 Anti-Aircraft Brigade | Augusta, Sicily |
| Oct 44 | |
Allied Forces HQ, 66 Anti-Aircraft Brigade | San Stefano, Italy |
| Jan 45 |  |
US 5 Army, 62 Anti-Aircraft Brigade | Gothic Line, Italy |
| Mar 45 | Suspended animation |
Batteries
| Sep 39 | 209 (Wolverhampton), 210 (West Bromwich), 311 |