Louis Martin-Chauffier started medical studies and, after his father's death, passed the École nationale des chartes entry competition, where he was received in 1915.
In May, he was arrested by the Gestapo and taken to the prison at Fort-Montluc;[1] then in April 1944 he was transported to German concentration camps, first to Neuengamme and then to Bergen-Belsen[2] At the Liberation of France, he was a delegate to the Provisional Consultative Assembly (July–August 1945) representing prisoners and deported, then continued his career as a journalist and continued to support the newspaper issue of clandestinity: he was the literary director of 'Libération, the daily directed by Emmanuel d'Astier de la Vigerie.
He then worked for various daily and weekly newspapers: head of the foreign service of Le Parisien libéré, a literary columnist at Paris-Presse et à Paris Match, editor of Fémina-Illustration .
He also engaged as a former resistant and deported and in the 1950s was one of the targets of the (verbal) attacks of the Holocaust deniers or revisionists of the time (Paul Rassinier, Albert Paraz [fr], Maurice Bardèche).
In 1952, he intervened in Le Figaro littéraire to answer Jean Paulhan's pamphlet, Lettre aux directeurs de la Résistance.