Source: Duty Nobly Done Roll of Honour 18th Bn. compiled and edited by Edward H. Wigney.
Note that a medical board recommended he be transferred from the infantry to military service that did not require much walking as he had fallen arches. The board report is dated June 17, 1915. Pte. Arnold served with the 18th Bn. until he was killed in action on September 8, 1917.