79 Anti-Aircraft Brigade RA (TA) was formed in November 1938 by expansion of 343 (Watford) Field Battery RA (TA). It was re-designated as 79 Anti-Aircraft Regiment RA (TA) in January 1939 and as 79 (Hertfordshire Yeomanry) Anti-Aircraft Regiment in July 1939. In June 1940 it was re-designated as 79 (Hertfordshire Yeomanry) Heavy Anti-Aircraft Regiment RA (TA). It served in France, the UK, Middle East and Italy. The Regiment was placed in suspended animation in March 1945. 79 (Hertfordshire Yeomanry) Heavy Anti-Aircraft Regiment RA (TA) was reconstituted as 479 (Hertfordshire Yeomanry) 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 |  |
6 Anti-Aircraft Division, 37 Anti-Aircraft Brigade | South East airfields, UK |
| Nov 39 |  |
Anti-Aircraft Command | Felixstowe, Suffolk, UK |
| Mar 40 | 3 Anti-Aircraft Brigade | Le Havre, France | |
| Jun 40 | 37 Anti-Aircraft Brigade | Cherbourg, France | |
| Jul 40 |  |
5 Anti-Aircraft Division, 45 Anti-Aircraft Brigade | South Wales, UK |
| Nov 40 |  |
9 Anti-Aircraft Division, 61 Anti-Aircraft Brigade | Swansea, Glamorgan, UK |
| Apr 42 |  |
War Office Control, 11 Anti-Aircraft Brigade | Eastleigh, Hampshire, UK |
| Jun 42 |  |
8 Anti-Aircraft Division, 55 Anti-Aircraft Brigade | Cornwall, UK |
| Oct 42 | |
War Office Reserve | Uttoxeter, Staffordshire, UK |
| Feb 43 |  |
1 Army | Algeria |
| Feb 43 | |
1 Army, 66 Anti-Aircraft Brigade | Philippeville, Algeria |
| Mar 44 | |
1 Army, 52 Anti-Aircraft Brigade | Foggia, Italy |
| Jun 44 | Regiment diluted with Basuto’s from the African Pioneer Corps |
Foggia, Italy | |
| Aug 44 |  |
US 5 Corps | Leghorn, Italy |
| Oct 44 |  |
8 Army, 12 Anti-Aircraft Brigade | Rimini, Italy |
| Mar 45 | Suspended animation |
Batteries
| Sep 39 | 246 (1st Watford), 247 (2nd Watford), 248 (Welwyn) |
| Mar 41 | 246, 247, 248, 398 |
| Aug 41 | 246, 247, 398, 437 |
| Jun 42 | 246, 247, 398 |
Gun Sites Occupied
246 Battery
| Date | Gun Site | Comments | Gun Defended Area |
| Aug 40 | P5 Bateman Hill | 4 x 3.7 inch Guns | Milford Haven |
| Aug 40 | P9 West Pennar | 4 x 3.7 inch Guns | Milford Haven |
| Feb 41 | N2 Neath (4 guns) S Mumbles (2 guns) |
4 x Guns 2 x Guns |
Swansea |
247 Battery
| Date | Gun Site | Comments | Gun Defended Area |
| Aug 40 | N3 Jersey Marine | 8 x 3.7 inch Guns | Swansea |
| Feb 41 | U Morriston N3 Jersey Marine |
4 x Guns 4 x Guns |
Swansea |
248 Battery
| Date | Gun Site | Comments | Gun Defended Area |
| Aug 40 | C/J4 Lavernock | 2 x 3.7 inch mobile, GL radar | Cardiff |
| Aug 40 | A/J2 Mardy Farm | 4 x 3 inch mobile 4 x 3.7 inch |
Cardiff |
| Feb 41 | T Sketty | Swansea |