Jacques Feldbau, born in Strasbourg, France, 1914: details regarding his activities in the French Jewish underground during World War II Work as a mathematician; joins the French underground movement as part of the OJC (Organization of Jewish Combat Fighters); joins the FTP (French Fighters and Partisans) underground; membership in La Sixieme (the Sixth); arrest; deportation to Drancy; transfer to Auschwitz; transfer to camps in Germany; death in Ebensee due to the harsh conditions. In the file: - Photograph of Jacques Feldbau; - Excerpt from a testimony.