Norman Leslie Treweek was born in Newlyn, Victoria, was single and a Mechanic living in Ballarat when he enlisted with the Railway Unit, Section 2 on 9 January 1917 at the age of 21. His unit embarked from Melbourne, Victoria, on board HMAT A70 Ballarat on 19 February 1917. He was admitted to the 15th General Hospital for bronchitis on 29 April 1916 and was discharged to duty the following month, on 12 May. However, the bronchitis proved to be chronic and he was returned to Australia per the Port Sydney for 3 months awaiting change and medical discharge.

Note: This was his second enlistment. He had first served as a Driver with the Australian Flying Corps during 1915, but was invalided to India on 6 April 1916.
Tree No. 650