The 3rd Battalion landed at Saint-Nazaire as part of the 17th Brigade in the 6th Division in September 1914 for service on the Western Front. The battalion saw action at the Battle of Delville Wood in July 1916, the Battle of Guillemont in September 1916 and the Battle of Vimy Ridge in April 1917 as well as the Battle of Messines in June 1917, the Battle of Passchendaele in October 1917 and the Battle of Cambrai in November 1917 before taking part in the Second Battle of the Somme in August 1918, the Battle of Cambrai in October 1918 and the Final Advance in Picardy.