Source: Nominal Roll, 18th Battalion, Spring 1915.
Family Search: When Corporal Beaumont Sutton Flack was born on 14 November 1880, in Durban, Natal, South Africa, his father, Thomas Sutton Flack, was 31 and his mother, Minerva Sarah Prince, was 28. He immigrated to Canada in 1913 and lived in Middlesex, England, United Kingdom in 1901 and Sarnia, Lambton, Ontario, Canada in 1919. He registered for military service in 1914. In 1914, at the age of 34, his occupation is listed as manurfacturer in Sarnia, Lambton, Ontario, Canada. He died on 16 June 1922, in London, Ontario, Canada, at the age of 41, and was buried in Arkona Cemetery, Arkona, Lambton, Ontario, Canada.
Private Slack served in Europe and then returned to Canada. He died the 18th of June, 1922 due to war wounds. He is buried in the Arkona Cemetery, Lambton County, Ontario.
Corporal Flack enlisted with the 18th Battalion CEF and served that battalion until December 1, 1916. He would contract TB during his war service and this appears contributory to his death.
This soldier joined the 18th Battalion at Sarnia, Ontario on November 3, 1914. He was 34-years old and involved in manufacturing. He was an active member of the Canadian Militia serving with the 27th Regiment. He also had 3.5 years of experience with the Woolshire Yeomanry and 1 year with the 1st Surrey Rifles.
Arriving in England in April 1915, he trained at West Sandling until the 18th Embarked on active duty in Belgium on September 15, 1915.
He was transferred to the 3rd Canadian Tunnelling Company on January 12, 1916, and served with that unit until he was sent to England due to illness on May 29, 1918.
He returned to Canada and was a patient at the Byron (London, Ontario) Sanitarium on October 19, 1918. He was still resident there on his death on June 16, 1922.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 