Heinrich Mohn, having managed the business since 1921, modernizes the publishing house and adds fiction to the program in the late 1920s. During the period of National Socialism, “völkisch” (populist-nationalist), and even some anti-Semitic literature was published, demonstrating the compatibility of the company’s conservative Christian tradition with Nazi ideology. Bertelsmann gains a lot of market share: Its total print run of approximately 19 million copies of special Armed Forces editions earns the publisher the dubious honor of being the No.1 supplier of books to the German Armed Forces. As the result of a court case pertaining to the illegal procurement of paper stocks and as part of the mobilization of Germany’s entire business sector, C. Bertelsmann Verlag is shut down in 1944.