James E. Hahn who was a senior captain with the 27th Regiment, Sarnia, during the First World War. Because of his heroic actions, King George V invested Hahn with the Military Cross during a ceremony at Buckingham Palace in London, England, in 1917.
Hahn was born in New York city in 1892. His parents had emigrated from Germany to the United States and then moved to the New Hamburg area, then to Stratford in 1911. By 1913, he was assistant manager of the Stratford Brass Co. He was living in the family home at 219 Cambria St. when he signed up for service in the First World War.
In that war, Hahn was involved in most major battles and wounded more than once. He had an important role in military intelligence, which he wrote about in 1954 in his memoirs, For Action: The Autobiography of a Canadian Industrialist. He also authored The Intelligence Service within the Canadian Corps in 1930.
Hahn's involvement with intelligence operations began as the 1st Battalion was heading to Britain. Before leaving, he was transferred to military intelligence, and served in that capacity on the Western Front through to November 1918. He took part in all of the major battles of the Canadian Corps, with the exception of Vimy Ridge. At that time, he was recovering from a wound.