Both Leo and his brother William volunteered for service and were both initially allotted to the Field Artillery. Leo was enlisted on 4 January 1917. On filling in his paperwork he stated that he was a 19 year old single labourer. He had been born at Lady’s Bay in the south of the state and that his next of kin was his mother who lived in Bathurst Street, Hobart. He also stated that he had served in the Senior Cadets and that he had tried previously to enlist but was discharged medically un-fit.
Soon after enlisting he was transferred to the 3rd Tunnelling Company undergoing training at Seymour in Victoria before proceeding overseas in August 1917. After more intense training in England he proceeded to France in late November 1917 and was taken on strength with his unit on 15 December 1917. He was granted English leave in November 1918 and remained in England until he returned to Australia in March 1919.
Post war he married Vera and together they had 3 children.