Charles Alexander Trahar (SN 10340) born at Ballarat, was a 25 year old labourer when he first enlisted in Ballarat on September 10th 1914 (SN 791). After just three weeks he was discharged as medically unfit. He made another attempt in July 1915 before joining the Australian Medical Corps in Melbourne on April 3rd 1916. He embarked the following day aboard the Euripides and sailed for England. Just two weeks after arriving he was hospitalised due to illness which was diagnosed as pulmonary tuberculosis. He was returned to Australia aboard the Karoola, disembarked at Melbourne on December 2nd 1916 and was discharged medically unfit on January 21st 1917. He died of tuberculosis on June 11th 1919.

His brother Ernest also served in the AIF and is honoured with a tree in the Avenue.