John Curwen-Walker, younger brother of Arthur Herbert Curwen-Walker (Tree No. 330) enlisted at just 18 years of age, on August 6th 1918, with the consent of his parents who had already lost one son. He trained with the depot battalion at Broadmeadows before being allotted to the General Service Reinforcements. He sailed from Sydney on November 2nd aboard the Medic, but became ill at sea and was admitted to the ship's quarantine hospital suffering from influenza. With the signing of the Armistice on November 11th, the Medic was recalled and arrived back in Sydney in mid-December. He was discharged on January 18th 1919.

His brother Arthur was wounded at Gallipoli in 1915 and died on May 3rd and is also honoured with a tree in the Avenue.