| Dec 40 | Formed as 1 Pack Regiment | Salibury Plain, UK |
| Dec 40 | Home Forces | UK |
| Jan 41 | Became 1 Mountain Regiment | UK |
| Jul 42 | 51 Inf Div | UK |
| Oct 44 | Became 1 Light Regiment | NW Europe |
| Mar 45 | Became 1 Mountain Regiment | NW Europe |
| Jun 45 | 2 Army | NW Europe |
Batteries
| Jan 41 | 451, 452, 453, 454, 1 Mountain Arty Ammo Column |
| Dec 42 | 451, 452 |
| Jul 43 | 451, 452, 474 |
Equipment
| Jun 45 | 3.7 inch Howitzer |
