 The battalion was formally disbanded on 30 August 1920.The 138th (Edmonton, Alberta) Battalion, CEF, was authorized on 22 December 1915 and embarked for Britain on 22 August 1916 where its personnel were absorbed by 128th Battalion, CEF, on 8 December 1916 to provide reinforcements for the Canadian Corps.The battalion was disbanded on 30 August 1920.