John Henry Foster "Jack" Babcock (23 July 1900 – 18 February 2010) was, at age 109, the last known surviving veteran of the Canadian military to have served in the First World War and, after the death of Harry Patch, was the conflict's oldest surviving veteran. Babcock first attempted to join the army at the age of fifteen, but was turned down and sent to work in Halifax until he was placed in the Young Soldiers Battalion in August 1917. Babcock was then transferred to the United Kingdom, where he continued his training until the end of the war.