 Wulf and Poliakov co-wrote "Das Dritte Reich und die Juden" ("The Third Reich and the Jews"), 1955, published in Berlin by the Arani Verlag.It was followed by two more volumes, "Das Dritte Reich und seine Diener" ("The Third Reich and its Servants"), 1956, and "Das Dritte Reich und seine Denker" ("The Third Reich and its Thinkers"), 1959.Nicolas Berg writes that the work "marked the breaking of a West German taboo", placing the Holocaust at the centre of its study of Nazi Germany, unlike the approach of other German historians at the time, and using direct language.