record fighting in World War I this was later removed from his record.Rossel-Kirschen and Willems, p. 168-169. Some sources have claimed that Natan's career in pornography did not end there. Joseph Slade suggests that Natan may have directed at least one hardcore pornographic film in Romania and produced and acted in at least 20 hardcore heterosexual and bisexual films between 1920 and 1927. Slade wrote that nearly all French pornographic films from this period which include bisexual and homosexual content were produced by Natan. The same source states that Natan himself was bisexual, and engaged in intercourse in Le Menage Moderne de Madame Butterfly (1920) and La Maîtresse du Capitaine de Meydeux (1924). Furthermore, Slade claimed that he introduced masochism into French pornographic film. Slade's claims are disputed by the historians of the French organization "Les Indépendants du Premier Siècle", who argue that the various actors in question are not Natan and that accusations at Natan's trial and in Paris-Match connecting him to the adult film industry were false.Droit de réponse Mise au point Sur le grand producteur Bernard Natan, LIPS.org, Natan, a 2013 documentary film, compares stills from the adult films attributed to Natan with official headshots and shows that several pornographic actors have been mistaken for Natan but are not him. Joseph Slade now admits there is room for doubt over whether Natan worked in pornography at any time after 1910. Death World War II broke out while Natan was in prison awaiting trial, and Nazi Germany conquered France. After Natan's release from prison, the French government handed him over to the occupying German authorities. Natan was sent to the Auschwitz concentration camp on 25 September 1942, where it is believed he died in 1943. Importance to the film industry Bernard Natan's importance to the French film industry should not be underestimated. He pioneered the vertical integration of the French film industry, and adopted the "American model" of film-making and distribution. This model provides the underpinning of the French film industry even in the 21st century. Indeed, Pathé survived into the 1980s almost solely on revenues generated by the companies purchased and integration instituted by Bernard Natan. Natan also brought television to France, and established the first French radio holding and television companies. Under Natan's leadership, the anamorphic film camera lens was developed. The anamorphic lens was not only a major advance in film technology, but helped Hollywood