Walter enlisted on 8th November 1915. On 7th May 1918 he was serving with No 1 Field Ambulance, and was awarded Field Punishment No1 for 28 days. He was wounded at Bohain-en-Vermandois on 17th October 1918, then on 21st February 1919 was discharged from the army as no longer physical fit for service due to his wounds.