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        • The Employment of the Bacteriological Weapon in the War
        • Planning of Japan invasion to USSR
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        • Establishing Manchukuo
        • The Development of Unit 731
        • Plan Kantokuen and Bacteriological Warfare
        • The Downfall of the Japanese WW2 Era
        • Three Stages of Interrogations
        • Lasting Impacts
      • Marutas of Unit 731 - Guide >
        • How did Ishii Shiro start unit 731?
        • A Beta Testing Site
        • Establishing Pingfan
        • Experiences at the Human Experimentation Complex
        • Vivisection at the Unit 731
        • Anta Testing Grounds
        • Overall Advance from the Laboratory Creations
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Background of Unit 731

4/3/2018

5 Comments

 
Unit 731 Background
Unit 731 of the Japanese Army conducted some of the most heinous experiments in the human history on POWs during the World War II.  Unit 731 had eight divisions: Division 1- Bacteriological research; Division 2- Warfare Research and field experiments; Division 3- Water Filter Production; Division 4- Bacteria Mass production and Storage; Division 5- Educational Division; Division 6- Supplies Division; Division 7- General Affairs; Division 8- Clinical Diagnosis. 
The leader of this unit was a 6-feet tall man known as Shiro Ishii. Born in Japan, Shiro was a bright young man who studied at the Kyoto Imperial University. There, he got to study preventive medicine, pathology, serology and bacteriology. In 1922 after completion of his studies at Kyoto Imperial University, he was sent to Kyushu where they were battling a contagious disease which was aggressive and causing deaths of many people including soldiers.

Shiro studied how he could effectively filter the contaminated water. He was able to successfully do it, much to the acclaim of his colleagues. To prove his filters worked to the Emperor of Japan, he demonstrated how his device worked by filtering his own urine and drinking it. In 1928, Shiro Ishii traveled extensively in various countries learning from their clinics and laboratories. After two years of travel, he returned to Japan. Due to his close association with influential and prominent officials, he was able to secure funding for his projects which he believed would propel Japan to the world leadership.  
Shiro Ishii proposed a research unit to study biological and chemical weapons. He argued that the Western powers were carrying out similar programs. He got support from Colonel Chikahiko Koizumi who was the army’s Surgeon General (later become Japanese Health Minister) and had secretly joined a poison gas research committee during World War I. Shiro Ishii was given the command of Unit 731 in 1932.

The Location

The project Unit 731 aka Epidemic Prevention and Water Supply Unit of the Kwantung Army, was initially established in Harbin. This was later to be blown up by prisoners and they had to look for a new location. Due to the kind of experiments being conducted, secrecy was a priority. Manchuria was a perfect hideout place. Manchuria was forcefully taken from the Chinese through Japanese invasion. It was about 200,000 square kilometers. In Manchuria, the research facility was set up in Pingfan and occupied three square kilometers. The buildings were strategically built to hide any suspicion and were further shielded by high walls and high voltage wires.
​

Later on from 1937 after Japanese expansion to China, other such facilities were set up in various Chinese cities such as Hsinking, Guangzhou, Beijing, and Nanjing.

The Personnels

The opportunity to work at the Unit 731 facilities was highly appealing to doctors and scientists as they the chance to experiment on human subjects and had financial aid from the army. To work here required high-level secrecy and members of the unit had to be transported in covered cargo trucks whose registration numbers were often changed to conceal identity. Some staff knew what was going on while others did not know of the “death blocks” where prisoners would pass through never to return. By 1939, Ishii’s network comprised of over 10,000 personnels conducting research at Unit 731. 

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  • Home
    • About >
      • FAQ's - Frequently Asked Questions
    • Support Us >
      • Projects you can support! >
        • Distributing Books
        • Presenting at 112th Annual Meeting of Pacific Coast Branch
        • Summer Research Relocation Fund
    • Contact
  • Stories
    • Videos >
      • Black Hearts (2021)
    • Blog
    • Podcast: Forgotten History
  • Internship
    • Summer 2025 Internship
    • Spring 2025 Internship
    • Summer 2024 Internship
    • Summer 2023 Internship
    • Fall 2022 Internship
    • Summer 2022 Internship
    • Summer 2021 Internship
    • Fall 2020- Spring 2021 Internship
    • Summer 2020 Internship
    • Fall 2019 Internship
    • Summer 2019 Internship >
      • Public History Night
    • School Year 2018-2019 Internship
    • Summer 2018 Internship >
      • 2018 Summer Showcase + Fundraiser
    • Fall 2017 Internship
    • Summer 2017 Internship >
      • 2017 Summer Showcase & Fundraiser
  • Books
  • Archives
  • Resource Page
    • Supplementary Research Guides >
      • Unit 731 - Guide >
        • Background of Biochemical Warfare Development
        • Imperial Japan's Chemical Warfare Development Program
        • Map of Unit 731
        • Personnel of Unit 731
        • Duties of Unit 731
        • Human Experimentation
        • [GRAPHIC] Germ Warfare Attacks
        • Cover Ups After the War
        • [OLD] Cover Ups After the War
      • Philippines' Resistance - Guide >
        • Philippines World War II Timeline
        • The Japanese Invasion & Conquest of the Philippines
        • Bataan Death March
        • Formation of Underground Philippines Resistance
        • Supplies of the Guerrilla Fighters
        • The Hukbalahap
        • Hunter's ROTC
        • Marking's Guerrillas
        • United States Army Forces in the Philippines of Northern Luzon (USAFIP-NL)
        • The Aetas
        • Chinese and Filipino-Chinese Nationalist Guerrilla Units
        • The Female Faces of the Philippine Guerrillas
      • Rising Sun Flag - Guide >
        • History of the Rising Sun Flag
        • Atrocities Committed Under the Flag
        • Rising Sun Flag in Pop Culture
      • Pinay Guerrilleras - Guide >
        • Japanese Occupation of the Philippine Islands: Pinays Answering the Call to Arms
        • The Fierce Heneralas and Kumanders of the Hukbalahap Guerrillas
        • Amazons of the Pacific Theater
        • Filipina American Veterans: Recovering the Extraordinary Feats of the Ordinary Pinays
        • The Legacy of the Asian Women Soldier
      • Fall of Singapore - Guide >
        • Singapore World War II Timeline
        • History of World War II in the Pacific
        • History of Singapore
        • Japan's Conquest in Asia
        • Japan's Invasion of the Malay Peninsula
        • Sook Ching Massacre
        • Double Tenth Incident
        • Social Changes and Challenges in Singapore
        • Voices from Syonan
        • Return to British Rule
      • Three Years and Eight Months - Guide >
        • Hong Kong before WW2
        • Buildup to World War 2
        • The Battle of Hong Kong
        • Life during 3 Years and 8 Months
        • East River Column Guerrilla Fighters
        • Prisoners of War Camps
        • End of Japanese Occupation
        • War Crimes Trials
      • Siamese Sovereignty - Guide >
        • The Land of Smiles
        • The Thai-Japanese Relationship
        • Phibun’s Domestic and International Policies
        • The Free Thai Resistance Movement
        • Post WW2 Aftermath of Thailand
      • The Khabarovsk War Crimes Trial - Guide >
        • Defendants of Khabarovsk War Crime
        • The Japanese Empire and USSR in WW2
        • The Employment of the Bacteriological Weapon in the War
        • Planning of Japan invasion to USSR
      • Unit 731 Cover-up : The Operation Paperclip of the East - Guide >
        • Establishing Manchukuo
        • The Development of Unit 731
        • Plan Kantokuen and Bacteriological Warfare
        • The Downfall of the Japanese WW2 Era
        • Three Stages of Interrogations
        • Lasting Impacts
      • Marutas of Unit 731 - Guide >
        • How did Ishii Shiro start unit 731?
        • A Beta Testing Site
        • Establishing Pingfan
        • Experiences at the Human Experimentation Complex
        • Vivisection at the Unit 731
        • Anta Testing Grounds
        • Overall Advance from the Laboratory Creations
        • The End of the War
      • Prince Konoe Memoir - Guide >
        • Who is Prince Konoe?
        • Preparation to Tripartite Pact
        • Emperor Hirohito and Prince Konoe
        • The End of Prince Konoe
      • Competing Empires in Burma - Guide >
        • What was the China-Burma-India Theater?
        • When did the China-Burma-India Theater Happen?
        • Who Fought in the China-Burma-India Theater?
        • The Second Sino Japanese War
        • Japan in the South
        • Operation U-Go
      • Battle of Shanghai - Guide >
        • The Battle of Shanghai. Background
        • Shanghai Before War
        • The First Battle of Shanghai 1932
        • Battle of Shanghai 1937
        • Aftermath of Battle for Shanghai
      • Ishi Shiro - Guide >
        • History of Biological Weapons and The Young Ishii Shiro
        • Establishment in Manchuria
        • Pingfang District - Harbin
        • Failures and Corruption
        • Post War
      • Taiwan The Israel of the East - Guide >
        • Background of Formosa
        • Industrialization of Japan
        • China During WWII
        • Taiwan under Kuomintang
        • New Taiwanese National Identity
      • Seeking Justice for Biological Warfare Victims of Unit 731 - Guide >
        • Introduction of Wang Xuan
        • Colonel Memorandum
        • The Beginning of Biological Warfare
        • The Bacteriological Warfare on China
        • Victims in Zhejiang’s Testimonies
        • After the War
      • Rice and Revolution - Guide >
        • The French Colonial Period
        • Anti-Colonial Resistance
        • The Rise of the Communist Movement
        • Imperial Japan’s Entry into Indochina
        • The Portents of Famine
        • The Famine (1944-45)
        • Legacy of the 1944-45 Vietnam Famine
      • Clash of Empires - Guide >
        • Japan’s Imperialist Origins
        • Japan’s Competition against the West: Nanshin-ron and Hokushin-ron
        • Japanese Imperialism Through the Lens of French Indochina
        • The U.S.-Japan Relations and the Pearl Harbor Attack
      • Hunger for Power and Self-SufficiencyI - Guide >
        • The Influence of War Rations on Post-War Culinary Transformations
        • How World War II Complicated Food Scarcity and Invention
        • American Military Innovations
        • Government-Sponsored Food Inventions in Europe during World War II
        • Feeding the Army: The Adaptation of Japanese Military Cuisine and Its Impact on the Philippines
        • Mixed Dishes: Culinary Innovations Driven by Necessity and Food Scarcity
      • Denial A Quick Look of History of Comfort Women and Present Days’ Complication - Guide >
        • The Comfort Women System and the Fight for Recognition
        • The Role of Activism and International Pressure
        • The Controversy over Japanese History Textbooks
        • The Sonyŏsang Statue and the Symbolism of Public Memorials
        • Activism and Support from Japanese Citizens
        • The Future of Comfort Women Memorials and Education
      • Echoes of Empire: The Power of Japanese Propaganda - Guide >
        • Brief Overview of Imperial Japan
        • Defining Propaganda
        • Propaganda Encouraging Action​
        • The Rise of Nationalism
        • The Formation of Japanese State Propaganda
        • Youth and Education
      • Shadows of the Rising Sun: The Black Dragon Society and the Dawn of Pan-Asianism - Guide >
        • Origins of the Black Dragon Society
        • The Influence of Pan-Asianism
        • Relationship with Sun Yat-sen
        • The Role in Southeast Asia
        • The Spread of Ideology and Espionage
        • Disbandment and Legacy
      • Chongqing Bombing: The Forgotten Blitz of Asia and Its Lasting Impact - Guide >
        • Introduction and Historical Background
        • The Class Divide During the Bombings
        • Resilience and Unity of Chongqing
        • Key Incidents - Great Tunnel Massacre
        • The Aftermath of the Bombings
        • Legacy and Commemoration
      • Shanghai's International Zone: A Nexus of War, Intelligence, and Survival - Guide >
        • Historical Background
        • The International Zone
        • Battles in Shanghai
        • Civilian Intelligence Efforts
        • Wartime Brutality
        • Aftermath & Legacy
    • Lesson Plans >
      • Reparations
      • Ethics in Science
      • Writing the Narrative of a Pinay Fighter
      • Privilege Journal
      • Environmental Injustices
      • Female Guerrillas
      • Hunter's ROTC
      • Scientific Advancements
      • Seeking Justice: A Humanities Lesson Plan
      • The Hukbalahap
      • Trading Immunity
      • Bataan Death March
      • Biochemical Warfare Development
  • History Remembered
Contribute