The battalion commander until late in the war was Lieutenant-Colonel Arthur Henry Bell of Calgary. On 17 May 1915, the battalion sailed for England on , with a complement of 36 officers and 1033 other ranks. After initial training in England, the battalion fought in Belgium and France, and was often at the forefront of the fighting at St. Eloi Craters, the Ypres Salient, Vimy Ridge (Thélus Village), Fresnoy, Somme, Second Battle of Passchendaele, the Battle of Amiens (1918), the Battle of Arras (1917), Battle of Drocourt-Quéant Line, Valenciennes, Mons, and the occupation of the Rhineland.