[4] The memorandum made in autumn 1939 provided information on national issues in contested areas of Polish-German borderlands and demonstrated that a group of historians in Eastern Germany were ready to help Nazis in their goals of ethnic cleansing[10] Schieder also enthusiastically supported the German invasion of Poland and wrote academic papers on Germany's role as a "force of order" and a "bearer of a unique cultural mission" in Eastern Europe.

[2] During the war he, along with Werner Conze, gave advice on Lebensraum policies of the Nazi regime in occupied territories in the East, which included theories on dejudaization of towns in Poland and Lithuania.

[11] In March 1940 Schieder who was director in charge of Regional Office for Postwar History(Landesstelle fur Nachkriegsgeschichte) presented the local Gauleiter Erich Koch with a detailed plan regarding studies of territories annexed to East Prussia; Koch himself wanted to know political, social and ethnic conditions in those areas.

"Schieder’s work – wrote Dr. Deborah Barton from University of Toronto – referred to the Poles and Soviets as "frenzied," "sadistic," and "driven by national hatred," whereas the language applied to Nazi crimes was more benign and conceptual ...

[9] The testimonies presented in the [Schieder] documentation – wrote Professor Robert G. Moeller – depicted Germans not as perpetrators but as victims of "a crime against humanity.