This Battalion was mobilized on the declaration of war on 4 August 1914. In November 1914 it departed England for France, and saw action on the Western Front, including the battles of Neuve Chapelle (1915), Aubers Ridge (the Regiment's defining action in the War) (1915), Somme (1916), Arras (1917), Passchendaele (1917), Cambrai (1917), Somme (1918), &amp; the Hundred Days Offensive (1918). It returned to the Corps' Headquarters in Kensington from France for demobilization in May 1919.