Erwin von Lahousen and Hans Bernd Gisevius , two of Canaris ' main subordinates , survived the war and testified during the Nuremberg trials about Canaris ' courage in opposing Hitler . Lahousen recalled a conversation between Canaris and General Wilhelm Keitel in which Canaris warned Keitel that the German military would be held responsible for the atrocities in Poland . Keitel responded that they had been ordered by Hitler . Keitel , who survived the war , was found guilty of war crimes at Nuremberg and hanged . < ! --- During his military career , Canaris had been decorated with the Iron Cross First and Second Class , the Silver German Cross , the Cross of Honour and the Wehrmacht Twelve and Twenty-Five Year Long-Service Ribbons :
Cross of Honour
The Honour Cross of the World War 1914/1918
Wilhelm Canaris