On 23rd November 1917 Hugh was serving with the 2nd Field Ambulance when he was transferred and taken on strength of the 141st Field Ambulance. He was slightly wounded by shell fire on 4th November 1918, suffering a 'GSW' to his left thigh, but remained at duty. On 20th September 1919 he proceeded from Kinmel Park for dispersal and was struck off the strength of the unit.