Phillip Flack (SN 15714) was born at Chetwynd in Western Victoria, his mother was resident in Ballarat, and he was a 42 year old farmer when he enlisted in Bunbury, Western Australia, in March 1917. He embarked from Fremantle aboard the Canberra on November 24th and sailed via Egypt to England. With the war entering its final months, he reached France in August 1918 to serve with the 51st Battalion. After just 10 days, illness forced him back to hospital in England. He was returned to Australia on the Orsova and disembarked at Fremantle on February 12th 1919. He was discharged, medically unfit, pleurisy, three weeks later on March 7th.

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