Shirō Ishii

Shirō Ishii
Ishii as a lieutenant colonel
Native name
石井 四郎
Born(1892-06-25)June 25, 1892
Shibayama, Chiba, Empire of Japan
DiedOctober 9, 1959(1959-10-09) (aged 67)
Tokyo, Japan
Allegiance Empire of Japan
Service / branch Imperial Japanese Army
Years of service1921–1945
RankSurgeon general (lieutenant-general)
CommandsUnit 731
Battles / wars
AwardsOrder of the Golden Kite, Fourth Class
Alma materKyoto Imperial University

Surgeon General Shirō Ishii (Japanese: 石井 四郎, Hepburn: Ishii Shirō, [iɕiː ɕiɾoː]; June 25, 1892  October 9, 1959) was a Japanese microbiologist and army medical officer, who served as the director of Unit 731, a biological warfare unit of the Imperial Japanese Army. Ishii led the development and application of biological weapons at Unit 731 in China during the Second Sino-Japanese War from 1937 to 1945, including the bubonic plague attacks at Chinese cities of Changde and Ningbo, and planned the Operation Cherry Blossoms at Night biological attack against the United States. Hirohito rewarded him with a special service medal for his work.

Ishii and his colleagues also engaged in human experimentation, resulting in the deaths of over 10,000 subjects, most of them civilians or prisoners of war.