Some of my information came from the book titled "Hitler's willing executioners" I forgot the authors name but you can search it on the net. Do you believed it might be biased?? The author seems highly convinced that the whermacht acted on free will when it came to killing civilians.

On the other hand I haven't found any sources that portray the whermacht as humans. Alot of authors fear that sympathy for the axis will be viewed as anti-semitic behaviour. When I try to get sources from the axis side, I end up with unreliable sources made by holocaust deniers which in turn only fuels my rage even more.

Also its hard to say its too extreme and not be labeled as anti-semetic.