Very informative reading........told me much I had never heard before. Explained psychological and social changes which occur resulting from en-masse peer pressure. Behaviours once considered impossible to believe, unacceptable, shocking, cruel and wrong become considered as normal by most people. Order Police Battalion 101, employed for specific purposes by Nazi regime, became desensitised, blinded to what they were doing to those they murdered. At times I felt myself gasping in horror at what I read. Thank goodness people have been able to write such books to inform on the chilling madness and criminal behaviours of war.