Twenty three year old Hilton was a Labourer when he enlisted at Inverell In January 1916 and became one of the First Contingent of The Kurrajongs. They spent their first weeks in camps at Narrabri and Armidale where he became a member of the 33rd Battalion C Company. He was transferred to the 34th Battalion 8th Reinforcement and did not leave Australia until July 1917.
Hilton served in France where he was wounded in April 1918 and evacuated to Colchester, England with a gunshot wound to his arm. His brother Claude also served with the 33rd Battalion and both men returned to Australia. Hilton was discharged in May 1919. Shortly after his return he married Edith Steel at Narrabri.
Private Hilton Fulmer has his name inscribed on the Inverell Honor Roll.