Frederick Belmont Hauser (SN 6513) was born in Geelong but was a single, 19 year old telegraphist when he enlisted in Ballarat on the June 6th 1916. With the 7th Battalion, he embarked from Melbourne on board the Nestor in October. He was posted to France in March 1917 where he joined the 1st Anzac Wireless Division but it appears that while on leave in England in September, he applied to join the Indian Army as an officer cadet and was discharged from the AIF. However, the discharge was canceled and a couple of weeks later he returned to France, this time with the 5th Divisional Signal Company. In May 1918, he was gassed and spent three months in hospital in England before rejoining his unit in August. He left France for England in April 1919 before boarding the Port Lyttleton in June, bound for Australia. He was discharged from the AIF on October 4th 1919.

His brother Edwin was killed in action in May 1917 and is also honoured with a tree in the Avenue.