On 15 July, 1916, the 220th Battalion (12th Regiment York Rangers), CEF was authorized for service and on 26 January, 1917, the battalion embarked for Great Britain. On 7 May, 1917, the battalion’s personnel were absorbed by the 3rd Reserve Battalion, CEF to provide reinforcements for the Canadian Corps in the field. On 1 September, 1917, the 220th Battalion, CEF was disbanded.
