BB-089 / War Crimes

Unit 100

1930s–45 · Japanese biological warfare unit

Unit 100

The Act

Documented historical episode involving mass violence or systematic cruelty associated with Unit 100. Contemporary and later accounts record significant civilian or targeted deaths.

The Response

Responses have included postwar trials, official denials or acknowledgments, memorialization, and ongoing historical debate. Full accountability varied widely by case and jurisdiction.

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