 Born in 1897 , Andrew joined the New Zealand Expeditionary Force in 1915 , having gained military experience while serving with the Territorial Force . He served on the Western Front from September 1916 to early 1918 , and ended the war as a commissioned officer in England . He remained in the military after the cessation of hostilities , and joined the New Zealand Staff Corps . He held staff and administrative positions in New Zealand and , while on an officer exchange program , British India . 
