On 10 October 1918 he left Sling Camp for the Western Front in France. Fortunately for Arthur the Allies were on the offensive and the Great War ended a month later on 11 November 1918.
Due to his Union Boat Club connections he was selected for the NZEF Rowing team which was to compete in series of military regattas in England and France during the spring and summer of 1919.
On 28 April 1919 he was the cox of the NZEF eight that won the legendary Battle on the Seine against an American Army eight made up of experienced rowers from Harvard and Yale Universities.
At one point in the race a Seine River barge appeared on a bend and as the cox Arthur generously gave the barge a wide berth to allow the American eight some racing room. After the race he was thanked for his sportsmanship by the cox of the American eight.
On 7 June 1919 he is appointed to the rank of Temporary Sergeant and is recorded as being attached to the NZEF Rowing Crew. On 8 August 1919 he embarked on the Tainui bound for New Zealand. He was accompanied by several of his team members and the NZEF Army VIII. While at sea he was promoted to Acting Sergeant on 14 August 1919.
He landed in Wellington on 21 September 1919 and was home for his twenty-first birthday and was discharged from the NZEF within two months on 19 October 1919.
By 1940, Arthur was farming near Taumaranui. He died on 23 October 1983 at Wanganui.