113 Heavy Anti-Aircraft Regiment RA (TA) was formed at TY Croes Camp, Anglesey in November 1940. The Regiment served in Anti-Aircraft Command until May 1943. It went to France in June 1944 and fought through to Antwerp. 113 Heavy Anti-Aircraft Regiment RA (TA) was disbanded in May 1945.
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.
| Nov 40 | Formed | Ty Croes, Anglesey, UK | |
| Nov 40 |  |
2 Anti-Aircraft Division, 50 Anti-Aircraft Brigade | Nottingham, Nottinghamshire, UK |
| Mar 41 | |
2 Anti-Aircraft Division, 66 Anti-Aircraft Brigade | Derbyshire, UK |
| Feb 42 |  |
10 Anti-Aircraft Division, 39 Anti-Aircraft Brigade | Hull, Yorkshire, UK |
| Aug 42 |  |
6 Anti-Aircraft Group, 51 Anti-Aircraft Brigade | Poolewe, Highlands, UK |
| May 43 | Home Forces | Tarporley, Cheshire, UK | |
| Jun 43 |  |
2 Army, 76 Anti-Aircraft Brigade | Tarporley, Cheshire, UK |
| Jan 44 | |
2 Army, 76 Anti-Aircraft Brigade | Southend, Essex, UK |
| Jun 44 |  |
30 Corps, 76 Anti-Aircraft Brigade | Gold Beach, Normandy, France |
| Sep 44 |  |
21 Army Group, 76 Anti-Aircraft Brigade | Dieppe, France |
| Sep 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Boulogne, France |
| Oct 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Antwerp, Belgium |
| May 45 | Disbanded |
Batteries
| Nov 40 | 359, 362, 366 |
| Feb 41 | 359, 362, 366, 391 |
| Sep 41 | 362, 366, 391, 439 |
| Oct 42 | 362, 366, 391 |