Alfred Dudley Titheridge was born in Ballarat, Victoria, was single and a Mechanic when he enlisted with the Field Artillery Brigade 4, Battery 10 on 21 September 1915 at the age of 21. His unit embarked from Melbourne, Victoria, on board HMAT A18 Wiltshire on 18 November 1915.

He was awarded the Distinguished Conduct Medal for æconspicuous gallantry and devotion to duty in repeatedly repairing wireless aerial when broken by heavy shell fire until it became impossible to keep it working. He then established successful communication with amplifier, and continued to work for two days after his ration supply had been destroyed by shell fire, eventually bringing away the whole of his wireless gear through heavy shelling.'

He returned to Australia 8 May 1919
Tree No. 1611