He was sentenced to death on october, 1, 1946, and got hung on october 16.
Waging, planning, and initiating wars of aggression, war crimes and crimes against humanity.
I think his punishment did fit his crime. If I could suggest his punishment i would starve him by giving him very little food and water for a month just like he did to the jews and then kill him. I think the punishment for all Nazi's charged with crimes against humanity should be that they have to spend the rest of their life in a camp like the ones they put the jews in.