With the armistice declared of June 18, 1940, he refused to accept Marshal Philippe Pétain and went to London with one of his brothers on board a trawler which departed from Lorient.
In August of that year, he met with Louis de La Bardonnie, and together, they created the Notre-Dame Brotherhood, which would become NDT-Castille in 1944.
Convinced that it was necessary to mobilize all forces against the occupation, he put the French Communist Party in touch with the exiled government of Free France in January 1943.
Awarded the Ordre de la Libération on March 13, 1942, he became a member of the executive committee of the Rally of the French People (RPF) from its creation in charge of trips and demonstrations.
Around 1993, a street in Caen, France, was named after Colonel Rémy[1] in a district close to the Mémorial pour la Paix Museum that has most of its streets honour personalities linked with the Second World War, the Resistance and the subsequent forming of the European Economic Community, which became the European Union.