Dönitz was unrepentant regarding his role in World War II, saying that he had acted at all times out of duty to his nation. He lived out the rest of his life in relative obscurity in Aumühle, occasionally corresponding with collectors of German naval history, and died there of a heart attack on 24 December 1980. As the last German officer with the rank of "Großadmiral" (grand admiral), he was honoured by many former servicemen and foreign naval officers who came to pay their respects at his funeral on 6 January 1981. He was buried in Waldfriedhof Cemetery in Aumühle without military honours, and service members were not allowed to wear uniforms to the funeral. Also in attendance were over 100 holders of the Knight's Cross of the Iron Cross.