Gustave Daniel Alfred Biéler DSO MBE (26 March 1904 – 5 September 1944) was a Special Operations Executive agent during World War II. Gustave Bieler was born in Beurlay in France. At the age of twenty, he emigrated to Canada where he settled in the city of Montreal working as a school teacher and then as an official translator for Sun Life Assurance and becoming a Canadian citizen. At the outbreak of World War II, although married with two children, Biéler joined the Canadian Army in Le Regiment de Maisonneuve and was shipped to a base in Britain. His wife Marguerite Geymonat worked as a broadcaster to the troops in Europe on Radio-Canada International. Because of his familiarity with France and his fluency in the French and English languages he joined the "Special Operations Executive" in