Although this material was not used at the time, later in 1941 the material the psychological war laboratory had developed in 1935 was dusted off, and served as the basis not only for propaganda in the Soviet Union but also for propaganda within the German Army. Before Barbarossa, German troops were exposed to violent anti-Semitic and anti-Slavic indoctrination via movies, radio, lectures, books and leaflets. The lectures were delivered by "National Socialist Leadership Officers", who were created for that purpose, and by their junior officers. German Army propaganda portrayed the Soviet enemy in the most dehumanized terms, depicting the Red Army as a force of Slavic "Untermenschen" (sub-humans) and "Asiatic" savages engaging in "barbaric Asiatic fighting methods" commanded by evil Jewish commissars to whom German troops were to grant no mercy.