“Because both Birkenau and Auschwitz are infamous names and a blot on the history of mankind it is necessary to explain how they differed. The railroad separated one from the other. When the selectors told off the deportees on the station platform “Right!” or “Left!” they were sending them to either Birkenau or Auschwitz. Auschwitz was a slave camp. Hard as life was at Auschwitz it was better than Birkenau. For the latter was definitely an extermination camp, and as such was never mentioned in the reports. It was part of the colossal guilt of the German rulers and was rarely referred to, nor was its existence ever admitted until the troops of the liberating Allies exposed the secret to the world. At Auschwitz many war factories were in operation, such as the D.A.W. (Deutsches-Aufrustungswerk), Siemens, and Krupp. All were devoted to the production of armaments. The prisoners detailed to work there were highly privileged compared to those who were not given such employment. But even those who did not work productively were more fortunate than the prisoners in Birkenau. The latter were merely awaiting their turn to be gassed and cremated. The unpleasant job of handling the soon-to-be corpses, and later the ashes, were relegated to groups called “kommandos.” The sole task of the Birkenau personnel was to camouflage the real reason for the camp: extermination. When the internees in Auschwitz, or in other camps in the area, were no longer judged useful they were dispatched to Birkenau to die in the ovens. It was as simple and cold-blooded as that.”