The 1st Manchester Rifles, later the 6th Battalion, Manchester Regiment, was a unit of Britain's Volunteer Force and Territorial Army recruited in and around Manchester. It served as infantry at Gallipoli, fighting with distinction at the Third Battle of Krithia, and in some of the bitterest battles on the Western Front in World War I. After conversion into an anti-aircraft unit of the Royal Artillery between the wars, it defended Manchester, Scapa Flow and Ceylon during World War II and continued in the air defence role until 1955.