William D'Arcy was born in Ballarat, Victoria was single and was employed as a Clerk. He enlisted in Sydney, New South Wales at the age of 25. He volunteered and was stationed with the 15th New South Wales General Service Rienforcements later transferring to the 56th Battalion with the Regimental number 59962. He was discharged and Returned to Australia on the 22nd of August 1919. Tree number 3635.