Source: Per news clipping post by David Archer at 18th Battalion Facebook Page (not group).
Family Search: When Private John Edward Hasson was born on 9 March 1877, in Kent, Ontario, Canada, his father, James Hasson, was 21 and his mother, Mary Louise Anderson, was 19. He had at least 6 sons and 8 daughters with Lillian Rose Duke. He lived in Harwich, Kent, Ontario, Canada in 1931 and Charing Cross, Kent, Ontario, Canada in 1933. He registered for military service in 1916. In 1916, at the age of 39, his occupation is listed as farmer in Thamesville, Kent, Ontario, Canada. He died on 1 November 1951, at the age of 74, and was buried in Mount Pleasant Cemetery, Thamesville, Chatham-Kent, Ontario, Canada.
This married 32-year-old farmer enlisted with the 186th Overseas Battalion on June 8, 1916, at London, Ontario.
He had a stay at the Military Hospital in London from June 28, 1916, to August 1, 191,6 for otitis media.
He would go to England aboard the SS Laplan on March 28, 1917 and would arrive at Liverpool on April 7, 1917, where he was transported to Bramshott and taken on strength with the 4th Canadian Reserve Battalion.
Five months later he was bound for service with the 18th Battalion, arriving after passing the No. 2 Canadian Infantry Base Depot and the Canadian Corps Reinforcement Camp,p arriving “in the field” on September 16, 1918.
He served with the Battalion until October 30, 1918, when his classification was changed to B.1. and he was struck off strength due to myalgia.
He was sent to England to recover and was struck off strength for transport to Canada on April 1, 1919.
He was discharged at London, Ontario, on April 12, 1919.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 