This Day In History: December 23, 1948 On December 23, 1948, seven Class A war criminals that included the former Prime Minister of Japan, Hideki Tojo, were executed by hanging at Sugamo Prison. The executions were carried out by the American occupation authorities. According to official U.S. documents detailing the procedures, “The execution will be witnessed with due solemnity and … Continue reading This Day in History: December 23rd- Tojo’s End