Mierzejewski uses sources that include Nazi Party membership records and Reichsbahn internal memoranda to explore the railway's operations, finances, and political and social roles from 1933 to 1945. He examines the Reichsbahn's role in German rearmament, its own lack of preparations for war, and its participation in Germany's military operations. He shows that despite successfully resisting Nazi efforts to politicize its internal functions, the Reichsbahn cooperated with the government's anti-Semitic policies. Indeed, the railway played a crucial role in the Holocaust by supporting the construction and operation of the Nazi death camps and by transporting Jews and other victims to them.