 It took heavy casualties at the Battle of Frezenberg in May 1915 before moving to Egypt in October 1915 and then to Salonika.The 3rd (Reserve) Battalion remained in the United Kingdom throughout the war and supplied drafts of trained infantrymen as replacements to the regular battalions that were serving overseas.The 1/4th Battalion was mobilised in the 164th (North Lancashire) Brigade of the 55th (West Lancashire) Division; it was temporarily attached to 154th (3rd Highland) Brigade in 51st (Highland) Division and landed in France in May 1915; it returned to 164 Brigade in January 1916.