Spandau Prison
Dönitz was sentenced to 10 years in prison – solely for his conviction related to waging a war of aggression. Once again, Dönitz's order to conduct unrestricted submarine warfare was not officially included in his sentence; however this was still the main reason why most judges wanted him convicted. Dönitz served 10 years in Spandau Prison plus the additional 18 months he had spent at Mondorf and Nuremberg while awaiting trial and being tried.