105 Anti-Tank Regiment RA was formed at Almaza in Egypt in Decmber 1942 with three batteries. A fourth was added in March 1943. The Regiment served in Palestine, Sicily and Italy. 105 Anti-Tank Regiment RA was disbanded in April 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.
| Dec 42 | Formed | Almaza, Egypt | |
| Dec 42 |  |
Middle East Forces | Palestine |
| Jul 43 |  |
8 Army | Sicily |
| Sep 43 | |
8 Army | Italy |
| May 44 |  |
13 Corps | Cassino, Italy |
| Apr 45 | Disbanded |
Batteries
| Dec 42 | A, Q, 209 |
| Mar 43 | 314, 315, 316 |
Equipment
| 1942-43 | 2 batteries 6pdr Self Propelled Deacon, 2 batteries 6 pdr portee |
| Jan 45 |
4 x 6 pdr Guns, 8 x 17 pdr Guns, 18 x M10 3 inch Self Propelled Guns, 12 x Valentine 17 pdr Self Propelled Guns (Archer) |