Langholm soldiers, both regulars and Territorials, were involved in some of the Great War’s major battles, including the following.
| April/May | Landings at Cape Helles |
| June/July | Gully Ravine |
| July | Achi Baba Nullah |
| August | Suvla Bay |
| December | Krithia Nullah |
France
| March | Neuve Chapelle |
| April/May | Hill 60, Ypres |
| May | Aubers Ridge |
| September | Loos |