The 16th (Service) Battalion (St Pancras) landed at Le Havre as part of the 117th Brigade in the 39th Division in March 1916 for service on the Western Front. The battalion saw action at the Battle of the Somme in Autumn 1916, the Battle of Pilckem Ridge in August 1917 and the Battle of Langemarck in August 1917 as well as the Battle of the Menin Road Ridge in September 1917, the Battle of Polygon Wood in September 1917 and the Second Battle of Passchendaele in November 1917 before taking part in the Battle of St Quentin in March 1918 and the Second Battle of Bapaume in August 1918.