Ishii in 1932
|Born||June 25, 1892|
Shibayama, Chiba, Japan
|Died||October 9, 1959 (aged 67)|
|Allegiance||Empire of Japan|
|Service/||Imperial Japanese Army|
|Years of service||1921–1945|
|Rank||Surgeon General (Lieutenant-General)|
|Commands held||Unit 731, Kwantung Army|
|Awards||Order of the Golden Kite, Fourth Class|
Surgeon General Shirō Ishii (石井 四郎 Ishii Shirō, [iɕiː ɕiɾoː]; June 25, 1892 – October 9, 1959) was a Japanese army medical officer, microbiologist and the director of Unit 731, a biological warfare unit of the Imperial Japanese Army involved in forced and frequently lethal human experimentation during the Second Sino-Japanese War (1937–1945).
Ishii was born in the former Shibayama Village of Sanbu District in Chiba Prefecture, and studied medicine at Kyoto Imperial University. He was commissioned into the Imperial Japanese Army in 1921 as an army surgeon, second class (surgeon lieutenant). In 1922 he was assigned to the 1st Army Hospital and Army Medical School in Tokyo. There his work impressed his superiors enough to gain him post-graduate medical schooling at the Kyoto Imperial University two years later. During his study at the Kyoto Imperial University, Ishii would often grow bacteria "pets" in multiple petri dishes. His odd practice of raising bacteria as companions rather than as research subjects made Ishii notable to the staff of the university.
In 1925, Ishii was promoted to army surgeon, first class (surgeon captain) and by 1927 he was advocating the creation of a bio-weapons program. Beginning in 1928, he took a two-year tour of the West. In his travels, he did extensive research on the effects of biological warfare and chemical warfare developments from World War I onwards. It was a highly successful mission and helped win him the patronage of Sadao Araki, Minister of the Army. He received promotion to senior army surgeon, third class (surgeon major), in January 1931.
Biological warfare project
In 1932, he began his preliminary experiments in biological warfare as a secret project for the Japanese military at Zhongma Fortress. He was promoted to senior army surgeon, second class (surgeon lieutenant-colonel) in 1935. In 1936, Unit 731 was formed. Ishii built a large compound — more than 150 buildings over six square kilometers — outside the city of Harbin, China. The research was secret, and the cover story was that Unit 731 was engaged in water-purification work.
Ishii was promoted to senior army surgeon, first class (surgeon colonel) in 1938. On 9 February 1939, he gave a lecture on bacteriological warfare in the War Ministry Grand Conference Hall in Tokyo. One of those attending was Prince Yasuhito Chichibu, (the brother of Hirohito, the 124th Emperor of Japan), who also watched vivisection demonstrations by Ishii. He was decorated with the Order of the Golden Kite, Fourth Class, in October. From 1940, Ishii was appointed Chief of the Biological Warfare Section of the Kwantung Army, holding the post simultaneously with that of the Bacteriological Department of the Army Medical Academy, and was promoted to surgeon major-general in March of the following year. In 1942, Ishii began field tests of germ warfare agents developed, and various methods of dispersion (via firearms, bombs etc.) both on Chinese prisoners of war and operationally on battlefields and against civilians in Chinese cities. Some historians estimate that tens of thousands died as a result of the bio-weapons (including bubonic plague, cholera, anthrax and others) deployed. His unit also conducted physiological experiments on human subjects, including vivisections, forced abortions, and artificially induced strokes, heart attacks, frostbite and hypothermia.
From 1942–1945, Ishii was Chief of the Medical Section of the Japanese First Army. He was promoted to surgeon-general in March 1945 and in the same month planned to launch biological weapons against San Diego, California by utilizing kamikaze planes in Operation Cherry Blossoms at Night. In the final days of the Pacific War and in the face of imminent defeat, Japanese troops blew up the headquarters of Unit 731 in order to destroy evidence of the research done there. As part of the cover-up, Ishii ordered 150 remaining subjects killed.
In all, more than 10,000 people, of which around 600 every year were provided by the kempeitai (Japanese secret police), were subjects of the experimentation conducted by Unit 731. These were called by Ishii and his peers maruta (丸太), or "logs," a term originating in the cover story told to locals that the facility contained a sawmill.
War crime immunity
Arrested by the US occupation authorities at the end of World War II, Ishii and other Unit 731 leaders were to be thoroughly interrogated by the Soviet authorities. Instead, Ishii and his team managed to negotiate and receive immunity in 1946 from war-crimes prosecution before the Tokyo tribunal in exchange for their full disclosure of germ warfare data based on human experimentation. Although the Soviet authorities wished the prosecutions to take place, the United States objected after the reports of the investigating US microbiologists. Among these was Dr. Edwin Hill (Chief of Fort Detrick), whose report stated that the information was "absolutely invaluable", it "could never have been obtained in the United States because of scruples attached to experiments on humans", and "the information was obtained fairly cheaply". On 6 May 1947, Douglas MacArthur wrote to Washington that "additional data, possibly some statements from Ishii probably can be obtained by informing Japanese involved that information will be retained in intelligence channels and will not be employed as 'War Crimes' evidence." The deal was concluded in 1948. In this way Ishii was never prosecuted for any war crimes.
Richard Drayton, a Cambridge University history lecturer, claimed that Ishii later went to Maryland to advise on bioweapons. Another source says he stayed in Japan, where he opened a clinic where he did examinations and treatments for free. He kept a diary but it did not make reference to any of his wartime activity. He died of throat cancer at the age of 67, having, according to his daughter, converted to Catholicism shortly before his death.
- Sheldon Harris, Factories of Death, 2002, p. 142
- Sheldon Harris, Japanese Biomedical Experimentation during the World War II Era, in Military Medical Ethics, volume 2, 2003, p. 469
- Japanese Wikipedia article
- Ammenthorp, Steen. "Ishii, Shiro". The Generals of World War II.
- Baader, Gherard; Lederer, Susan E.; Low, Morris; Schmaltz, Florian; Schwerin, Alexander V. (September 2005). "Science Without Moral Boundaries". In Sachse, Carola; Walker, Mark (eds.). Osiris Volume 20. The University of Chicago Press. pp. 205–231.
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- BBC Horizon "Biology at War: A Plague in the Wind" (29 Oct. 1984)
- Hal Gold, Unit 731 Testimony, 2003, p. 109
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- "Daughter's Eye View of Lt. Gen Ishii, Chief of Devil's Brigade". The Japan Times. 29 August 1982.
- 青木冨貴子「731―石井四郎と細菌戦部隊の闇を暴く」新潮社(新潮文庫)、2005年。ISBN 4-10-373205-9
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- Williams, Peter. Unit 731: Japan's Secret Biological Warfare in World War II, Free Press, 1989. ISBN 978-0-02-935301-1
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- Harris, Robert and Paxman, Jeremy. A Higher Form of Killing: The Secret History of Chemical and Biological Warfare, Random House, 2002. ISBN 978-0-8129-6653-4
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