---
title: "Nanking Massacre | History of Japan"
description: "The Nanking Massacre was the mass killing and rape of Chinese civilians and prisoners during Japan's 1937 occupation of Nanjing in History of Japan."
canonical: "https://fiveable.me/history-japan/key-terms/nanking-massacre"
type: "key-term"
subject: "History of Japan"
unit: "Unit 8"
---

# Nanking Massacre | History of Japan

## Definition

The Nanking Massacre was the mass killing, rape, looting, and arson carried out by Japanese troops in Nanjing from December 1937 to January 1938. In History of Japan, it marks one of the starkest examples of wartime militarism and occupation violence.

## What It Is

The Nanking Massacre, also called the Rape of Nanking, was a period of extreme violence committed by Japanese forces after they captured Nanjing, then the capital of China, in December 1937. For History of Japan, it is not just a wartime atrocity, it is a major example of how Japan's imperial expansion in Asia turned into brutal occupation on the ground.

Japanese troops killed large numbers of Chinese civilians and disarmed soldiers, with estimates often placed between 200,000 and 300,000 dead. The violence included executions, street killings, looting, arson, and widespread sexual assault. Tens of thousands of women were raped. That scope matters because the massacre was not a single incident, but a sustained breakdown of military discipline and human rights over weeks.

The event sits inside the wider Second Sino-Japanese War, which began in 1937 and became a central front in Japan's push to dominate East Asia. Nanjing was a political and symbolic target because it was the Chinese capital. Capturing it was supposed to demonstrate Japanese strength, but the conduct of the occupation exposed the cost of imperial warfare. You can think of it as the dark underside of Japan's expansionist policy: victory on a map, catastrophe for civilians.

Eyewitness accounts from foreigners living in Nanjing, along with photographs, diaries, and reports, documented what happened while it was happening. That evidence is one reason the massacre remains so historically powerful. It is also why the event still shapes debates about memory, wartime responsibility, and the legacy of Imperial Japan.

In modern Japanese history, the Nanking Massacre is often discussed alongside military nationalism and state efforts to justify expansion through ideas of empire, order, and Asian leadership. The massacre shows what those ideas looked like once armies crossed borders and civilians were treated as expendable.

## Why It Matters

The Nanking Massacre matters because it is one of the clearest case studies for Japan's wartime empire in Asia. If you are tracing how Imperial Japan moved from regional power to aggressive occupier, this event shows the human cost of that shift better than a treaty or battle summary ever could.

It also helps you read the Second Sino-Japanese War more accurately. The war was not only about armies fighting armies. It involved occupation, terror, and the treatment of civilians, and Nanjing is the most famous example of that pattern. When a course asks about Japan's expansion in the 1930s, this term connects military conquest to civilian suffering, which is often the real historical story behind imperial policy.

The massacre is also central to understanding postwar memory in East Asia. The fact that it has been documented, denied, minimized, and argued over for decades makes it more than a battlefield event. It becomes a source for studying historiography, nationalism, and international relations, especially between China and Japan. In other words, the event still matters because people continue to fight over how it should be remembered.

## Connections

### Second Sino-Japanese War

The Nanking Massacre happened during this war, so you cannot separate the atrocity from Japan's broader campaign in China. The war provides the military setting, while the massacre shows what occupation looked like after a major city fell. When you study the war, Nanjing is one of the clearest examples of escalation from invasion to mass violence.

### Imperial Japan

This term helps you place the massacre inside Japan's empire-building project. Imperial Japan relied on military conquest, colonial control, and ideas of Asian leadership to justify expansion. Nanjing shows what happened when those ideas met real resistance and real civilians. It is a useful example of how empire could produce both propaganda and atrocity.

### War Crimes

The Nanking Massacre is often discussed as a war crime because it involved mass killing, sexual violence, and attacks on civilians and prisoners. That makes it a good case for understanding how historians and legal thinkers classify wartime conduct. It also shows why documentation matters, since eyewitness reports and survivor testimony become evidence.

### [Attack on Pearl Harbor](/history-japan/key-terms/attack-on-pearl-harbor)

Pearl Harbor comes later, but the Nanking Massacre helps explain the wider path toward Pacific War escalation. Together, these events show how Japan's militarism spread from China to conflict with the United States. If you are tracing chronology, Nanking belongs to the earlier phase of expansion that set the stage for larger war.

## On the AP Exam

On a quiz or essay, you might be asked to identify the Nanking Massacre in a timeline, explain how it reflects Japanese militarism, or connect it to Japan's expansion into China. A short-answer response should name the place, date range, and type of violence, then explain why it matters in the broader story of Imperial Japan. If you get a document or eyewitness excerpt, look for clues about occupation, civilian targeting, and military discipline. In discussion or a written response, it is also common to compare the massacre with other examples of wartime brutality to show how empire affected noncombatants.

## Nanking Massacre vs Second Sino-Japanese War

The Second Sino-Japanese War is the larger conflict between Japan and China beginning in 1937, while the Nanking Massacre is one atrocity that took place during that war. If the question asks about the full war, talk about campaigns and control of territory. If it asks about Nanjing, focus on the mass violence after the city fell.

## Key Takeaways

- The Nanking Massacre was a mass killing and sexual violence campaign carried out by Japanese troops in Nanjing from December 1937 to January 1938.
- It belongs to the history of Japan's expanding empire in Asia, especially the invasion of China during the Second Sino-Japanese War.
- The event is remembered not just for battlefield violence, but for attacks on civilians and prisoners after the city had already been captured.
- Eyewitness accounts, diaries, photos, and later historical research made the massacre one of the best documented atrocities in modern East Asian history.
- The massacre still shapes debates about war memory, denial, and responsibility in relations between China and Japan.

## FAQs

### What is the Nanking Massacre in History of Japan?

It was the mass killing, rape, looting, and arson committed by Japanese soldiers after they captured Nanjing in late 1937. In History of Japan, it is studied as a major wartime atrocity linked to Imperial Japan's expansion in Asia.

### Why is the Nanking Massacre controversial?

The violence itself is well documented, but debate continues over the scale, terminology, and how Japan has remembered the event. That makes it a major example of how history can become a political issue, not just a factual one.

### Is the Nanking Massacre the same thing as the Second Sino-Japanese War?

No. The Second Sino-Japanese War was the larger war between Japan and China, and the Nanking Massacre was one of the worst events that happened during it. Think of the war as the bigger conflict and Nanjing as a specific atrocity inside that conflict.

### How do you use the Nanking Massacre in a History of Japan essay?

Use it as evidence that Japanese expansion was not only diplomatic or military, but also violently destructive to civilians under occupation. It works well in essays about militarism, empire, wartime propaganda, and postwar memory.

## Related Study Guides

- [8.4 Japan's expanding empire in Asia](/history-japan/unit-8/japans-expanding-empire-asia/study-guide/KNBWnednH8uywUaE)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)

## Structured Data

```json
{"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/history-japan/key-terms/nanking-massacre#resource","name":"Nanking Massacre | History of Japan","url":"https://fiveable.me/history-japan/key-terms/nanking-massacre","learningResourceType":"Concept explainer","educationalLevel":"AP® / High School","about":{"@id":"https://fiveable.me/history-japan/key-terms/nanking-massacre#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-07-03T02:21:33.836Z","isPartOf":{"@type":"Collection","name":"History of Japan Key Terms","url":"https://fiveable.me/history-japan/key-terms"},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/history-japan/key-terms/nanking-massacre#term","name":"Nanking Massacre","description":"The Nanking Massacre was the mass killing, rape, looting, and arson carried out by Japanese troops in Nanjing from December 1937 to January 1938. In History of Japan, it marks one of the starkest examples of wartime militarism and occupation violence.","url":"https://fiveable.me/history-japan/key-terms/nanking-massacre","inDefinedTermSet":{"@type":"DefinedTermSet","name":"History of Japan Key Terms","url":"https://fiveable.me/history-japan/key-terms"}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is the Nanking Massacre in History of Japan?","acceptedAnswer":{"@type":"Answer","text":"It was the mass killing, rape, looting, and arson committed by Japanese soldiers after they captured Nanjing in late 1937. In History of Japan, it is studied as a major wartime atrocity linked to Imperial Japan's expansion in Asia."}},{"@type":"Question","name":"Why is the Nanking Massacre controversial?","acceptedAnswer":{"@type":"Answer","text":"The violence itself is well documented, but debate continues over the scale, terminology, and how Japan has remembered the event. That makes it a major example of how history can become a political issue, not just a factual one."}},{"@type":"Question","name":"Is the Nanking Massacre the same thing as the Second Sino-Japanese War?","acceptedAnswer":{"@type":"Answer","text":"No. The Second Sino-Japanese War was the larger war between Japan and China, and the Nanking Massacre was one of the worst events that happened during it. Think of the war as the bigger conflict and Nanjing as a specific atrocity inside that conflict."}},{"@type":"Question","name":"How do you use the Nanking Massacre in a History of Japan essay?","acceptedAnswer":{"@type":"Answer","text":"Use it as evidence that Japanese expansion was not only diplomatic or military, but also violently destructive to civilians under occupation. It works well in essays about militarism, empire, wartime propaganda, and postwar memory."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"History of Japan","item":"https://fiveable.me/history-japan"},{"@type":"ListItem","position":2,"name":"Key Terms","item":"https://fiveable.me/history-japan/key-terms"},{"@type":"ListItem","position":3,"name":"Unit 8","item":"https://fiveable.me/history-japan/unit-8"},{"@type":"ListItem","position":4,"name":"Nanking Massacre"}]}]}
```