Karl Alexander von Müller (1882-1964) was a mediator between traditional and Nazi historical viewpoints. He was well known before 1933 and quickly put himself and his knowledge at the disposal of the Nazis. Especially in his role as Editor of the “Historische Zeitschrift” (History Journal) was he able to engage other German historians in this effort. Matthias Berg draws a picture of the life and works of von Müller from his early childhood onward, bringing to light his writings during World War I and his opposition to the Weimar Republic as well as his later path into the service of the Nazi regime and his efforts to be rehabilitated after 1945.