Nazi War Trials

At the end of the Second-World-War the victorious Allies began unprecedented proceedings against those leading Nazis who had been captured. The trial that followed was conducted in four languages and involved over 400 sessions of open court.
Andrew Walker provides a chronology of the proceedings and revealing portraits of the personalities involved. There are frequent references to the terrible events unleashed on Europe by the Nazis and the book asks the questions that were raised at the time and have not been fully answered since. What was the legal validity of the trial and were the ones who were tried always the right people to bear the responsibility for Nazi crimes?