He served with the Chatham Division of the Royal Marines. HMS Conquest was commissioned into service in the Royal Navy in June 1915. She was assigned to the 5th Light Cruiser Squadron in Harwich Force, which operated in the North Sea to guard the eastern approaches to the Strait of Dover and English Channel. In August 1915, she was among the ships which took part in the pursuit of the Imperial German Navy auxiliary cruiser Meteor in the North Sea, which resulted in Meteor scuttling herself on 9 August 1915. She covered the force that carried out the Royal Naval Air Service seaplane raid on the German Navy airship hangars at Tondern, then in northern Germany, on 24 March 1916. On the 28th March Arthur, along with 38 other members of the ships company, were returning to HMS Conquest from shore leave. The ship's boat, which seems to have been too small for so many men, became lost in a snow storm and foundered. All those aboard drowned. Arthur’s body was returned to the UK and is buried in the Maidstone Road Cemetery, Chatham.