At the age of twenty, he emigrated to Canada where he settled in the city of Montreal, working as a school teacher at l'Institut Français Évangélique in Pointe-aux-Trembles, and then as a translator for Sun Life Assurance.
At the outbreak of World War II, although married with two children, Biéler joined the Canadian Army in Le Régiment de Maisonneuve[citation needed] and was shipped to a base in Britain.
[2] His daughter Jacqueline Bieler researched "Commandant Guy's" life extensively, for her book Out of Night and Fog and provided the following summary of his escapades in France to the CBC: One of his jobs was to organize a parachute drop.
"[3]His operations were so successful that the Germans instituted a special manhunt to get him and his team and on the morning of 14 January 1944 the Gestapo arrested him and agent Yolande Beekman in the Café Moulin Brulé in Saint-Quentin.
"[3] Unable to get useful information from him, the Germans executed Major Guy Biéler by a firing squad – instead of the gas chamber or piano wire often used on other agents – with a guard of honour, on 5 September 1944.