Promoted to Chef de Battaillon in June 1943 of the war, he assumed command of the 1st Battalion of the "phalange magnifique". His unit was part of 1st Free French Division and partook to the assault against the Gustave line in Italy in the spring of 1944, as well as to the disembarking in Provence in August 1944. He then participated to the Battle of Alsace () in the Alpes in April 1945.