112 Heavy Anti-Aircraft Regiment RA (TA) was formed with three batteries in October 1940. The Regiment served in Anti -Aircraft Command until March 1944 when it transferred to 2 Army. It went to France in June 1944 and fought through to Germany. 112 Heavy Anti-Aircraft Regiment RA (TA) was disbanded in October 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.
| Oct 40 | Formed | ||
| Oct 40 |  |
11 Anti-Aircraft Division, 34 Anti-Aircraft Brigade | Birmingham, UK |
| May 41 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | South West England |
| Dec 41 |  |
9 Anti-Aircraft Division, 45 Anti-Aircraft Brigade | South Wales |
| May 42 | |
9 Anti-Aircraft Division, 61 Anti-Aircraft Brigade | South Wales |
| Mar 44 |  |
2 Army | UK |
| Jun 44 | |
2 Army, 76 Anti-Aircraft Brigade | Normandy, France |
| Sep 44 |  |
21 Army Group, 76 Anti-Aircraft Brigade | Dieppe, France |
| Nov 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Antwerp, Belgium |
| Mar 45 |  |
30 Corps, 106 Anti-Aircraft Brigade | Rhine crossing, Germany |
| Apr 45 |  |
1 Canadian Army, 1 Corps | Germany |
Batteries
| Oct 40 | 351, 352, 353 |
| Sep 41 | 351, 352, 353, 380 |
| Aug 42 | 352, 353, 380 |