Arthur enlisted on 25th August 1915. He was 19 years and 5 months old and a clerk by trade. He did his training and was transferred to serve with the 103rd Field Ambulance on 25th September. He embarked at Southampton on 11th January 1916, then disembarking the next day at Havre he entered the war in France on 12th January 1916. He was the son of Mrs Ellen Gypps of 21 Pleasant Terrace, Dunmow, Essex.