Dannecker and the Hungarian establishment (not the Arrow Cross, which came to power only in October 1944) deported more than a half a million Hungarian Jews between early 1944 and summer of the same year. Dannecker developed under Eichmann into one of the SS's most ruthless and experienced experts on the "Jewish Question", and his involvement in the genocide of European Jewry was one of primary responsibility.

A passage from a 1942 report by Dannecker illustrates