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      • 2017 Summer Showcase & Fundraiser
  • Books
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  • 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

Plan Kantokuen and Bacteriological Warfare

The East Conference & Invasion of Manchuria


Japan’s Kantokuen plan in 1941 further supports the thesis that Unit 731 and Unit 100 were created, not solely but in part, in order to prepare bacteriological weapons to use in an invasion of the USSR. Kantokuen was an operational plan created by the General Staff of the Imperial Japanese Army and approved by Emperor Hirohito for an invasion and occupation of the far eastern region of the USSR, capitalizing on the German Army’s invasion of the USSR in June 1941. Kantokuen involved a three-step readiness phase followed by a three-phase offensive to isolate and destroy the Soviet Army and occupy the eastern Soviet cities in no more than six months. The plan involved a heavy use of chemical and biological weapons.

'> The pretext for the 1931 invasion was engineered by General Kenji DoiharaPicture
​A map outlining the initial Japanese offensive moves against the Soviet Union, with final objective being a line that ran along the western slope of the Greater Khingan Range

Kantokuen was never deployed against the USSR. Even as the build up stage of Kantokuen was underway, external conflicts with outside powers, one military against China and the other economic against the United States and its allies, continued to drag on. At about this time, both Hideki Tojo and the Emperor pulled their support in regard to an invasion of the USSR. While both supported a reinforcement of troops in Manchuria, neither were willing to engage in military hostilities. As Japan began to face issues with the British, the Dutch, French, and Americans in Southern Asia, especially after the US implemented an embargo on Japan on August 1, attention shifted to approve of Japan’s new destructive war in the south.26 Japan did not abandon all plans to attack the USSR, however. For example, through 1942 extensive reconnaissance of the border region was conducted while detailed maps were created indicating targets of opportunity for biological warfare.​

The End of WWII and Liquidations of Units 731 and 100


On August 9, 1945 the Soviet Union officially declared war on Japan, and the Red Army moved into Japanese-occupied Manchuria. In response to the Soviets’ declaration of war, the Japanese government in Tokyo ordered that all the research facilities in Manchuria be destroyed to erase all incriminating material. Unit 100, located just south of Changchun, and Unit 731, located in the cluster of villages known as Ping Fan, had carried out some of Japan’s most horrific war crimes during World War Two. ​

Picture
Soviet gains in North East Asia, August 1945

The news of the Red Army’s invasion of Manchuria forced General Shiro Ishii, the head of Unit 731 and one of the main instigators of Chemical and Bacteriological warfare research, to order the destruction of the research facilities. A skeleton crew began the liquidation of Unit 731 on either August 9 or 10, while the rest of Unit 731 evacuated. All test subjects, who had been held prisoner, were killed and cremated so no remains would remain. The design of the facilities, however, made them hard to destroy by bombing, and several remains of the building were left standing when the Soviets arrived.

Related Book

Book cover of Fall of Singapore
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Unit 731 Cover-up :
​The Operation Paperclip of the East

During the occupation of Japan after WWII, the US had an important decision to make. Should they hold those responsible for atrocities during the war accountable or should they take the information to advance national interest?

The researchers who worked at Unit 731, the biological and chemical warfare research and development unit, were given immunity in exchange for their research data. Unit 731 included factories filled with humans, tested with various diseases, as well as field tests on civilians of the Soviet Union and China. Imperial Japan had aspirations to develop operative tools of biological warfare, one that was prohibited after World War I. Using alive human captives, the Japanese scientists of the medical profession gathered data on the progression of the diseases until the "human guinea pigs" collapsed. Most of these scientists lived peacefully after WWII, with a few of them having to go through the Khabarovsk Trial, which was deemed by the West as communist propaganda.

Most of the horrors on Unit 731 had been hearsays and rumors until recently with the passing of the Freedom of Information Act. This book is based on documents found in the U.S. National Archives and Records Administration, Russian archival documents, and translations of the Khabarovsk Trial to paint a complete picture of the cover-up of the atrocious act of Unit 731. Readers could expect to questions themselves with this evidence: Should war crimes be covered up in the name of national interest?

Previous Section

The Development of Unit 731

Next Section

The Downfall of the Japanese WW2 Era​

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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