Once World War II came to an end, the Allied nations put German and Japanese military personnel as well as civilian collaborators on trial for the war crimes they allegedly committed against Allied soldiers and noncombatants.  At this point, three types of war crimes were established.  The A Class-or “crimes against peace”-were crimes committed by military leaders and politicians who took full responsibility for starting the war and were at fault for many of the war crimes committed by their forces.  The B Class dealt with more “conventional” war crimes.  These are crimes committed by soldiers in the field against soldiers and civilians from enemy countries.  “Crimes against humanity” were covered by the C Class and consisted of crimes against people of any nationality.  The C Class was created in order to prosecute Nazi war criminals for the atrocities they committed against their own people.  This category was established as an “unconventional” supplement to the B Class.  The Japanese found it very hard to distinguish between the B and C Classes; therefore they were forced to combine these two categories for the purpose of prosecution.  The Japanese found many of the crimes they committed to be very conventional, while other countries deemed the same crimes to be extremely unconventional.