Arthur entered the war in France on 16th December 1914. He joined the 141st Field Ambulance for duty on 21st February 1918. On 25th June 1918 he was admitted 'sick' into the Hospital of the unit, then was discharged back to duty on the 29th. On 14th May 1919 he proceeded to the Concentration Camp for dispersal and was struck off the strength of the unit.