William entered the war in France on 11th August 1915. He was slightly wounded on 18th July 1916 whilst serving with bearers attached to No 2 Field Ambulance. He was admitted into his unit after being transferred from No 1 Field Ambulance. On 6th February 1917 he was admitted to hospital and transferred to the 3rd Casualty Rest Station. Being discharged from the 3rd C.R.S. on 14 February, he rejoined his unit for duty. On 22nd February 1917 he was admitted 'sick' to the hospital of the 2nd Field Ambulance.