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The Nanjing Massacre began

On this day · 13 December 1937
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The Nanjing Massacre began

When Japan's army stormed China's capital, weeks of mass killing turned a fallen city into one of the war's gravest atrocities.

Verified · USC Shoah Foundation

On December 13, 1937, the Imperial Japanese Army captured Nanjing, then the capital of China, after weeks of fierce fighting in the Second Sino-Japanese War. What followed was not the end of a battle but the start of an atrocity. Over roughly six weeks, Japanese soldiers carried out mass executions of surrendered troops and unarmed civilians, alongside widespread looting, arson, and sexual violence.

Estimates of the dead range from 100,000 to more than 300,000, a span that remains fiercely contested between historians and governments to this day. Tens of thousands of women and girls were raped, giving the events their grim alternate name, the Rape of Nanjing.

A small group of Western missionaries and businessmen formed the Nanking Safety Zone, a fragile refuge that sheltered tens of thousands as the city burned around them.

After the war, commanding general Matsui Iwane was convicted of war crimes by the International Military Tribunal for the Far East and executed. The massacre endures as a flashpoint in Sino-Japanese relations.

300,000
victims estimated
6 weeks
of mass killing
1937
year it began

Sources & references

3 references

Well-established. Corroborated by 3 independent sources.

1 USC Shoah Foundation academic research institute “On December 13, 1937, The Japanese army captured what was then China's capital city, Nanjing, and killed as many as 300,000 civilians and numerous unarmed Chinese soldiers over the course of two months.” sfi.usc.edu ↗
2 Encyclopædia Britannica Encyclopedia “after its seizure of Nanjing, China, on December 13, 1937, during the Sino-Japanese War” britannica.com ↗
3 HISTORY media “In what became known as the 'Rape of Nanking,' the Japanese butchered an estimated 150,000 male 'war prisoners,' massacred an additional 50,000 male civilians, and raped at least 20,000 women and girls of all ages.” history.com ↗
✓ Last reviewed Jun 7, 2026

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