I remember the true horror of the Auschwitz scene in WaR. From the arrival the trains to the dumping of the ashes into the Vistula River, nothing was left hidden or edited. DC and he production crew wanted everyone to know exactly what it was like so all sensibilities of the audience were ignored and for the first time the FCC and ABC censors allowed complete full-frontal nudity of both males and females, young and old.
Most of the "extras" were not actors/actresses - they were Polish locals with no acting experience. In the horrific "shower room" scene, where the lights were suddenly extinguished, the doors locked shut and the zyklon B gas released, as the "extras" (now totally nude) started screaming in the dark rushing the secured doors, pounding and pleading, small children crying hysterically, it was true terror on their part, not acting.
It is all very difficult to watch, but a necessity so such a thing can never happen again.
Gerard