Domicile: Yamanashi Prefecture
Born: 1909
1927: Graduate of Judicial Faculty, Nippon University
1939: Army Legal Officer
Feb. 1944: Attached Legal Dept. Seibu Army Area
Aug. 1945: Demobilized.
Wako received a nine year sentence for his part in the Doolittle case in which he sat as a legal member of the court.
Sentence was imposed in Shanghai.
Wako was the assistant in charge of the Western Army Legal Section and in early May told Sato, in Akita's presence, that it was too much trouble to try fliers and asked that Sato get the approval of Yokoyama and Inada to execute them without trial.
Sometime later Wako requested Sato to attend the Legal Section meeting at which Ito and Enatsu were present . At that time Wako stated he had been a judge at the Doolittle trial, and it would be a most difficult matter to get a conviction for indiscriminate bombing, and for that reason he was in favor of execution without trial.