SS Untersturmfuhrer Becker writes to his commander of some technical difficulties he is experiencing with his equipment:

I should like to take this opportunity to bring the following to your attention: several commands, after the gassing is completed, have had the bodies unloaded by their own men. There is a great danger that this will lead to their health being affected, if not immediately, at least later on. The commanders do not want to countermand these orders as they fear that if prisoners were employed they would find some opportunity to escape.
The application of gas is not always carried out in the correct manner. In order to get the job finished as quickly as possible, the driver presses the accelerator down to the fullest extent. Thereby the victims suffer death by suffocation and not by dozing off, as was intended. By correct adjustment of the levers death comes faster and the prisoners fall asleep peacefully. Previously the victim’s faces and other signs showed they died in agony.
An outstanding example of a true humanitarian at work.

The distorted stuff they passed off as history in those days completely failed to notice both world wars. We were left to search it out for ourselves, and surely it came in its most pungent form in The Scourge of the Swastika by Lord Russell of Liverpool. Only the more bloodthirsty amongst us dared speak of it. It was full of remarkable horrors that were best absorbed in silence. The pictures of naked women running the gauntlet and piles of skeletal bodies left no gaps for the imagination to dare to fill. When anyone raised the subject, we just said ‘yeah’ and swept the conversation on to Audie Murphy.