On the morning of 13 December 1937, Japanese troops entered the Chinese city of Nanjing. The city had been the capital of the Nationalist government, which had fled westward ten days earlier, leaving behind a population of perhaps half a million civilians and a garrison of soldiers who had largely melted away into the city’s streets, stripped of their uniforms. What followed over the next six to eight weeks has been estimated, in careful scholarly work, to have cost between one hundred thousand and three hundred thousand lives — the uncertainty is itself a historical problem of the first order — as well as the systematic rape of an estimated twenty thousand to eighty thousand women. That the events happened is not in question; they were witnessed by Western diplomats and missionaries who remained in the city, documented in contemporaneous diaries and dispatches, and recorded in the proceedings of the International Military Tribunal for the Far East in 1946. What makes Nanjing so historically remarkable is not only its horror but what came after: a sustained, politically motivated effort to minimise, deny, and suppress it that has shaped the politics of East Asia from the end of the Second World War to the present day.

The Road to Nanjing: War and Escalation

The Second Sino-Japanese War, which formally began on 7 July 1937 with the Marco Polo Bridge Incident near Beijing, had its roots in a decade of Japanese imperial expansion on the Asian continent. Japan had seized Manchuria in 1931, established the puppet state of Manchukuo, and progressively extended its military and political influence into northern China. The Chinese Nationalist government under Chiang Kai-shek had pursued a policy of cautious accommodation, calculating that China was not yet strong enough to resist Japan directly and that time was needed to build a modern army and economy. The policy generated profound internal tensions: the Chinese Communist Party, with which the Nationalists had concluded an uneasy United Front, pressed for active resistance; the broad Chinese public seethed at each new humiliation; and the Japanese military, dominated by officers who believed that China’s weakness invited expansion, pushed ever further.

The full-scale war that erupted in the summer of 1937 caught both sides without clear plans for what a prolonged conflict would look like. Japan expected a short, decisive campaign — as it had experienced in the First Sino-Japanese War of 1894–95 — that would force a settlement on Japanese terms. China, or at least its Nationalist government, hoped that determined resistance would draw in international intervention, as the League of NationsLeague of Nations Full Description:The first worldwide intergovernmental organisation whose principal mission was to maintain world peace. Its spectacular failure to prevent the aggression of the Axis powers provided the negative blueprint for the United Nations, influencing the decision to prioritize enforcement power over pure idealism. The League of Nations was the precursor to the UN, established after the First World War. Founded on the principle of collective security, it relied on moral persuasion and unanimous voting. It ultimately collapsed because it lacked an armed force and, crucially, the United States never joined, rendering it toothless in the face of expansionist empires. Critical Perspective:The shadow of the League looms over the UN. The founders of the UN viewed the League as “too democratic” and ineffective because it treated all nations as relatively equal. Consequently, the UN was designed specifically to correct this “error” by empowering the Great Powers (via the Security Council) to police the world, effectively sacrificing sovereign equality for the sake of stability.
Read more had failed to provide over Manchuria but might yet deliver given sufficient provocation. Neither calculation proved correct. The Battle of Shanghai, which lasted from August to November 1937, was a grinding urban struggle in which the Nationalists committed their best German-trained divisions and suffered catastrophic losses — perhaps a quarter million casualties. The city fell in November. Japan’s forces then drove westward toward Nanjing, which fell on 13 December.

The context matters for understanding what happened next. The Japanese army that entered Nanjing was an army that had fought a savage urban battle for three months, that had been pushed beyond its logistical capacities, whose officers had been telling their troops that Chinese resistance was near collapse and who were accordingly furious when it proved otherwise, and whose institutional culture provided almost no constraint on the treatment of enemy combatants or civilians. The distinction between combatants and civilians was, in any case, made more complex by the large number of Nationalist soldiers who had abandoned their uniforms — Japan treated the detection of such men, whether actual soldiers or ordinary citizens of military age, as a military necessity justifying immediate execution without trial.

The Safety Zone: Witnesses in an Inferno

What distinguishes the Nanjing Massacre from many comparable atrocities in the history of modern warfare is the quality of the documentation. The foreign nationals who remained in the city — missionaries, businessmen, professors, and diplomats from the United States, Britain, and Germany — established an International Safety Zone in the weeks before the Japanese arrival, modelled on similar zones that had operated in Shanghai. The zone, centred on Ginling College and several other foreign-owned institutions, eventually sheltered between two hundred thousand and three hundred thousand Chinese civilians. Its administration fell largely to a small committee of foreigners who found themselves simultaneously trying to protect the people in their care and documenting what was happening around them.

John Rabe, the German businessman who chaired the Safety Zone committee, left a diary that was not published until 1997 but that constitutes one of the most remarkable documents of twentieth-century atrocity. Rabe was a Nazi Party member who had been in China for thirty years and who used his party membership and the swastika armband as symbols of authority that Japanese officers would respect. His diary records, with the precision of a man who understood that he was witnessing something that would require evidence, the shootings, the rapes, the burning of buildings, the bayoneting of prisoners, and the systematic looting that Japanese troops conducted across the city. Rabe and his colleagues repeatedly confronted Japanese officers and soldiers, occasionally succeeded in driving them away from their victims, and filed hundreds of written protests with the Japanese Embassy that were received and largely ignored.

Minnie Vautrin, an American missionary educator who ran Ginling Women’s College within the Safety Zone, left a diary that is in some ways even more harrowing than Rabe’s. Vautrin spent weeks almost entirely without sleep, positioning herself physically between Japanese soldiers and the women and girls they came to assault. Her diary records not only specific incidents but her own psychological disintegration under the weight of what she was witnessing and unable to prevent. She suffered a breakdown in 1940 and died by suicide in 1941, her mental health destroyed by the memories of Nanjing. Her diary was not widely read in the West until decades later; it is among the most direct records of what mass sexual violence in wartime looks like from the perspective of someone trying to stop it.

These Western witnesses gave their testimonies at the International Military Tribunal for the Far East — the Tokyo War Crimes Tribunal — in 1946. General Iwane Matsui, who commanded the Japanese forces that took Nanjing, was convicted of war crimes and hanged in 1948, along with six other defendants on other charges. The judgment was explicit: the tribunal found that Japanese forces had murdered prisoners of war and civilians in numbers that it estimated conservatively at over two hundred thousand. The legal record, in other words, was established comprehensively. The problem was not evidence. The problem was what happened to that evidence in the decades that followed.

The War in China: Scale and Character

The Nanjing Massacre was the most concentrated and best-documented single episode in a war of extraordinary brutality and scale. The Second Sino-Japanese War, which merged into the broader Pacific War after Japan’s attack on Pearl Harbor in December 1941 and ended with Japan’s surrender in August 1945, cost China an estimated fifteen to twenty million lives — military and civilian combined — making it one of the deadliest conflicts of the twentieth century. The figure is dwarfed in Western consciousness by the European theatre of the Second World War, and the war is correspondingly less present in Western historical memory despite its scale and the suffering it involved.

The character of the conflict was shaped by several features that distinguished it from the European theatres. Japan’s military strategy rested on the assumption that Chinese resistance would collapse quickly if sufficient violence was applied — an assumption that proved wrong but that shaped Japanese conduct throughout the war. The Nationalist government retreated to Chongqing deep in the interior, where it survived under constant Japanese bombing but could not reconstitute the military capacity to drive the Japanese back. The Communists, operating from their base areas in the rural north, waged a guerrilla campaign that tied down Japanese forces without offering the decisive engagement that might have ended the war. The result was a brutal equilibrium of occupation, atrocity, and resistance that lasted eight years.

Japan’s occupation of eastern China involved a range of practices that were documented by Chinese survivors and foreign observers and later confirmed by Japanese sources. The comfort women system — the euphemistic term for the organised sexual enslavement of women from across Asia, including China, Korea, the Philippines, and other occupied territories — was established as a formal military institution and operated throughout the war. Unit 731, the biological warfare unit based at Pingfang near Harbin, conducted lethal experiments on prisoners — Chinese, Korean, and others — in developing biological and chemical weapons. These specific programmes were suppressed after the war: the United States, in a decision that reflected Cold WarCold War The geopolitical and ideological confrontation between the United States and the Soviet Union that dominated global politics from 1947 to 1991. It was fought not through direct military conflict between the superpowers but through proxy wars, arms races, espionage, and ideological competition across the developing world. The Cold War began before the Second World War had fully ended: American and Soviet disagreements over the post-war order in Europe were visible at Yalta in February 1945 and had hardened into open confrontation by 1947, when the Truman Doctrine committed the United States to resisting Soviet expansion and the Marshall Plan began binding Western Europe to American economic leadership. The term itself was popularised by journalist Walter Lippmann in 1947, capturing the essential quality of a conflict that neither side could allow to become hot — because both possessed nuclear weapons capable of annihilating the other’s cities. The resulting stalemate was managed through deterrence, alliance systems (NATO in the West, the Warsaw Pact in the East), and the deliberate avoidance of direct superpower confrontation even while both sides fought intense proxy wars in Korea, Vietnam, Angola, Afghanistan, and dozens of other theatres. The Cold War was simultaneously a strategic competition and an ideological one: each side claimed to represent the future of humanity, and each used development aid, propaganda, cultural diplomacy, and covert action to advance its model in the non-aligned world. It ended not with a military defeat but with the internal collapse of the Soviet system between 1989 and 1991. The Cold War’s most important characteristic was its globality: what began as a European dispute about occupation zones became a worldwide competition that shaped the politics of every continent. For the United States, it justified interventions that overthrew democratic governments (Iran 1953, Guatemala 1954, Chile 1973) on the grounds that any leftist government was a Soviet beachhead; for the Soviet Union, it justified the crushing of reform movements within its own bloc (Hungary 1956, Czechoslovakia 1968) on the grounds that any deviation threatened the socialist camp. The Cold War’s legacy is therefore not only the fall of the Berlin Wall but the long list of democracies destroyed, developmental alternatives foreclosed, and civil wars fuelled in the name of containing the other side. The Third World paid the price for a confrontation between two powers that never actually fought each other. strategic priorities over justice, granted immunity to Unit 731’s scientists in exchange for their research data. The full extent of both programmes was not acknowledged by the Japanese government for decades, and the comfort women issue in particular remains a live diplomatic wound between Japan and South Korea.

Denial and Memory: The Postwar Politics of an Atrocity

The story of how the Nanjing Massacre was suppressed, minimised, and eventually became a central site of political conflict in East Asia is inseparable from the Cold War settlement in the Pacific. Japan’s postwar occupation, administered by the United States, was oriented toward building Japan as a stable, democratic, capitalist ally against the Soviet Union and the newly established People’s Republic of ChinaRepublic of China Full Description:The state established on January 1, 1912, succeeding the Qing Dynasty. It was the first republic in Asia, but its early years were plagued by political instability, the betrayal of democratic norms by Yuan Shikai, and fragmentation into warlordism. The Republic of China was envisioned by Sun Yat-sen as a modern, democratic nation-state. It adopted a five-colored flag representing the unity of the five major ethnic groups (Han, Manchu, Mongol, Hui, and Tibetan). However, the central government in Beijing quickly lost control of the provinces. Critical Perspective:The early Republic illustrates the “crisis of sovereignty.” While it had the forms of a republic (a president, a parliament), it lacked the substance. It could not collect taxes efficiently or command the loyalty of the army. It remained a “phantom republic” internationally recognized but domestically impotent, existing in a state of semi-colonialism until the nationalist consolidation in the late 1920s.
Read more. This strategic priority influenced how the war crimes tribunals were conducted — Emperor Hirohito was not charged, partly to preserve the monarchy as a stabilising institution — and how the occupation authorities handled the question of Japanese responsibility for wartime atrocities more broadly. The result was a peace settlement in which Japan acknowledged war crimes in general terms while many of the specific perpetrators and programmes escaped full accountability.

Within Japan, the postwar decades produced a complex and contested historical culture around the war. The dominant mainstream narrative emphasised Japanese victimhood — particularly the atomic bombings of Hiroshima and NagasakiHiroshima and Nagasaki Full Description The atomic bombing of the Japanese cities of Hiroshima (6 August 1945) and Nagasaki (9 August 1945) by US B-29 bombers, killing an estimated 110,000–210,000 people immediately and tens of thousands more from radiation in the following months. The bombings were followed by Japan’s surrender on 15 August 1945, ending the Second World War. They represented the first — and so far only — use of nuclear weapons in warfare, initiating the atomic age and the nuclear arms race that defined the Cold War. Critical Perspective The decision to use atomic bombs remains among the most contested in modern history. The Truman administration’s justification — that the bombs prevented a land invasion that would have killed millions on both sides — has been challenged by historians who note that Japan was already close to surrender, that the Soviet declaration of war against Japan (9 August) may have been the decisive factor, and that the bombings were partly designed to end the war before Soviet forces could claim a role in the Pacific settlement. The bombs were dropped on cities, killing primarily civilians — a fact that sits uncomfortably with the “military necessity” framing., which had the effect of positioning Japan as a victim of wartime violence rather than a perpetrator — while treating the war’s conduct in Asia with relative silence. A progressive intellectual tradition challenged this narrative and produced serious scholarship on Japanese wartime atrocities, including the Nanjing Massacre. But from the 1980s onward, a nationalist revisionist current emerged that challenged the established findings, argued that the death toll at Nanjing had been massively exaggerated, and in some cases denied that a systematic massacre had occurred at all. These arguments appeared in academic publications, popular books, and eventually in the curriculum committees that shaped what Japanese school textbooks said about the war.

The textbook controversies that erupted periodically from the 1980s onward — in 1982, 1986, 2001, and at intervals since — involved Japanese government approval of school history texts that critics in China and South Korea argued minimised or sanitised Japanese wartime conduct. The controversies generated diplomatic crises, boycotts, and a cycle of accusation and denial that has made the history of 1937–45 one of the most politically charged subjects in East Asian international relations. China’s government, which under Mao had largely subordinated the memory of the Sino-Japanese War to the narrative of Communist revolutionary triumph and which had its own complex reasons for managing historical memory of the Nationalist period, became increasingly willing from the 1980s onward to use the Nanjing Massacre as a diplomatic instrument — a claim on Japanese guilt and international sympathy that could be deployed in bilateral negotiations or moments of tension.

Iris Chang and the Return of Nanjing to Global Consciousness

The event that most dramatically returned the Nanjing Massacre to Western consciousness was the publication in 1997 of Iris Chang’s The Rape of Nanking: The Forgotten HolocaustHolocaust holocaust The systematic, state-sponsored persecution and murder of six million Jews by the Nazi regime and its collaborators between 1933 and 1945. It was the culmination of a programme of escalating persecution, exclusion, and ultimately industrialised genocide without precedent in human history. The Holocaust — the Hebrew term is Shoah, meaning catastrophe — unfolded in stages. The Nazi seizure of power in 1933 brought immediately a regime committed to removing Jews from German public life: civil service dismissals, boycotts, the Nuremberg Laws of 1935 which stripped Jews of citizenship, Kristallnacht in 1938 which destroyed synagogues and Jewish businesses across Germany and Austria. The war began in 1939; with the invasion of the Soviet Union in June 1941, a qualitative shift occurred. The Einsatzgruppen — mobile killing squads — followed the German advance, shooting Jews and others in mass executions; at Babi Yar outside Kyiv, 33,771 Jews were shot in two days in September 1941. The Wannsee Conference of January 1942 coordinated the implementation of the Final Solution across the German bureaucracy; purpose-built extermination camps — Auschwitz-Birkenau, Treblinka, Sobibor, Belzec, Chelmno, Majdanek — processed and murdered hundreds of thousands of victims monthly. The killing extended across occupied Europe, from France to Greece, from the Netherlands to the occupied Soviet Union, coordinated by German agencies with varying degrees of local collaboration. By May 1945, approximately six million Jews had been murdered — two-thirds of European Jewry. The Romani people, Soviet prisoners of war, disabled people, homosexuals, and political prisoners were also killed in large numbers; the Jews were targeted for total extermination. The Holocaust has generated more historical scholarship than any other event in the twentieth century, and yet certain questions retain their analytical and moral difficulty. The debate about perpetrators — whether ordinary men became mass murderers through obedience to authority and peer pressure (Browning) or through a specifically German eliminationist antisemitism (Goldhagen) — remains unresolved, with most historians finding partial truth in both positions. The question of bystanders — ordinary Europeans who knew what was happening and did not intervene — raises uncomfortable questions about the relationship between knowledge and complicity. The question of uniqueness — whether the Holocaust was singular in character and should be considered distinct from other genocides, or whether it can be compared without minimising either event — has generated genuine scholarly and political controversy. None of these debates diminishes the Holocaust’s centrality to any serious engagement with the twentieth century; they reflect the difficulty of thinking adequately about events of this magnitude. of World War II. Chang, a Chinese-American journalist and historian, had been galvanised by her family’s connections to the massacre — her grandparents had fled Nanjing — and by the absence of the event from American historical memory. Her book, which drew extensively on the diaries of Rabe, Vautrin, and other witnesses as well as on Chinese survivor testimonies and Japanese sources, became a bestseller and introduced the subject to a mass Western readership for the first time. The book’s title — invoking the Holocaust — was deliberately provocative, and it generated both intense scholarly debate and furious reaction from Japanese nationalist quarters.

The scholarly reaction to Chang’s book was mixed in ways that were instructive about how the field had developed. Historians who had worked on Nanjing for years — Japanese, Chinese, and Western — acknowledged that her contribution in bringing the subject to public attention was significant while raising questions about specific claims and figures in the text. The death toll question, which Chang estimated at the higher end of the scholarly range, was and remains contested: not because there is serious doubt that a massacre of enormous scale occurred, but because the specific numbers depend on methodological choices about which categories of killing to include and which sources to weight. This is the kind of debate that occurs in the historiography of most mass atrocities; what was distinctive about Nanjing was the way in which legitimate scholarly debate about numbers was seized upon by deniers as evidence that the whole event was fabricated.

Iris Chang’s own subsequent history added another layer to the tragedy. She suffered a mental breakdown while researching a subsequent book on the Bataan Death March, and died by suicide in 2004 at the age of thirty-six. The parallel with Minnie Vautrin — another woman who had immersed herself in Nanjing and been destroyed by what she found there — was noted by many who wrote about Chang’s death. The massacre’s capacity to damage those who engaged most deeply with it was not merely metaphorical.

The War’s Long Consequences

The Second Sino-Japanese War’s consequences for East Asian history were profound and ramifying in ways that are still not fully worked through. The war exhausted the Nationalist government militarily and morally, creating the conditions for the Communist victory in 1949. The Communists, who had fought a different kind of war in the rural base areas and had emerged from it with their organisation intact and their political base among the peasantry strengthened, were better positioned than the Nationalists to reconstitute a functioning state in the aftermath of the Japanese surrender. The connection between the Sino-Japanese War and the Communist victory — the way in which one produced the conditions for the other — is one of the clearest causal relationships in the history of modern Asia, though it is sometimes obscured by narratives that treat the Civil War and the Japanese war as separate events.

The war also reshaped the international order in Asia in ways that remain consequential. Japan’s defeat and occupation established a security framework — the US-Japan alliance, the American military presence in the Pacific — that has defined the region’s strategic architecture for eight decades. Taiwan, where the Nationalist government retreated in 1949, remains in a political limbo that is directly traceable to the decisions made in 1945 about how to end the war and manage the peace. The territorial disputes that China has pursued in the South China Sea and elsewhere are entangled with historical claims that derive partly from the wartime period, when Japan controlled vast areas of the Pacific and China’s sovereignty was comprehensively violated.

The question of historical memory and accountability for the Sino-Japanese War has never been resolved in the way that — imperfectly and incompletely — the question of German responsibility for the Holocaust was resolved in postwar Europe. Japan has issued various apologies and expressions of remorse for its wartime conduct, some more explicit than others, but has never achieved the kind of sustained national reckoning that Germany undertook from the 1960s onward. The reasons are multiple and contested: the Cold War strategic context that made full accountability politically inconvenient; the particular dynamics of Japanese domestic politics, in which nationalist politicians have consistently resisted what they characterise as a masochistic historical narrative; and the way in which Japanese victimhood — particularly the atomic bombings — has occupied the emotional space that acknowledgement of perpetration might otherwise have filled. The result is a set of bilateral relationships — Japan and China, Japan and South Korea — that are periodically convulsed by historical grievances that cannot be addressed because they cannot be agreed upon.

The city of Nanjing today contains a vast memorial museum on the site of one of the massacre’s killing grounds. The museum, which has been expanded and renovated several times since its opening in 1985, receives millions of visitors annually and is one of the most visited historical sites in China. Its existence is itself a political statement: the People’s Republic of China uses the Nanjing Massacre as an element of a broader historical narrative about national humiliation at the hands of imperial powers and the Communist Party’s role in ending that humiliation. The museum’s visitor figures spike during periods of Sino-Japanese diplomatic tension. History, here as elsewhere, is not the past — it is the present, conducted by other means.