Complex sentence: Harvard University Press as well as being described as "Untermenschen" ("sub-humans "), and that the German campaign in the east was fought to ensure the survival of European culture against this"Asian menace".
Split into simpler sentences: Harvard University Press describing them as "Untermenschen" ("sub-humans "). German media portrayed the German campaigns in the east as necessary to ensure the survival of European culture against this"Asian menace".