The son of the Hon. Justice W. H. P. Clement, Carleton Main Clement attended public school in Vancouver, British Columbia before attending Victoria College at the University of Toronto in 1912 and 1913. Having served with the 31st B.C. Horse, Clement resigned his commission in the militia and enlisted as a private in the 30th Battalion in June 1915. In March 1916 he transferred to the Royal Flying Corps and received Royal Aero Club Aviator's Certificate 2563 on 16 March 1916. After training and a promotion to First Lieutenant he was posted to 22 Squadron in June 1916. He was promoted to Captain in January 1917 and scored his first 8 victories flying the F.E.2b. In July and August of 1917, he scored 6 more victories flying the Bristol F.2b. Missing in action on 19 August 1917, Clement's Bristol Fighter was seen going down near Langemarck, out of control. He was shot down by anti-aircraft fire. His Military Cross was awarded posthumously.