Sydney’s birth was registered at Inverell in 1895. He was one of the children born to James and Annie Mannix of Stannifer NSW. As a twenty-one-year-old Labourer, he enlisted at Rutherford NSW in September 1916. He joined the 36th Battalion, 5th Reinforcement and sailed from Australia for England on HMAT A24 Benalla in November 1916. After a few weeks in England, he was sent to France in March 1917. Three months later he was wounded in action, then wounded a second time in October 1917. He went to England for treatment for a gun shot wound to his left arm, then returned to France in December.
During April 1918 he was appointed Lance Corporal and transferred from the 36th Battalion to the 33rd Battalion. In September he was severely wounded a third time and sent to 2nd Western General Hospital at Manchester in England where he died of his wounds. Sydney was given a Military Funeral and buried at Manchester Southern Cemetery. His wallet and other personal possessions were returned to his Mother.
Sydney’s name is recorded on the Stannifer and Old Mill Honor Roll.