Charles entered the war in France on 11th August 1915. On 5th November 1916 he was admitted into the 45th Field Ambulance. On 14th August 1918 he was admitted 'sick' into hospital of No 2 Field Ambulance, then discharged on 18th August 1918. On 9th January 1919 he passed through the Dispersal Station in England and was accordingly struck of the strength of the unit.