All events · The World Wars

The Japanese Occupation of Southeast Asia: Internment, Romusha and Famine

1942–1945 · East & Southeast Asia

Confinement Mass Killing Sexual Violence

Confined

4 million

About 100,000 Dutch and other European civilians were interned in camps in the Dutch East Indies, and roughly 140,000 Allied prisoners of war were held across the Japanese-occupied territories, of whom about 60,000 were used with some 200,000 Asian labourers on the Burma-Siam railway. Estimates of Indonesian romusha mobilised on Java range from 4.1 million to 10 million, of whom about 300,000 were sent overseas. Figures come from Japanese and Allied camp records, the postwar Dutch government inquiries summarised by the NIOD Institute, and Allied war graves registration.

Share of the population affected

3.1%

of the population of the Southeast Asian territories under Japanese occupation, 1942

Killed

2.5–5 million

excess mortality incl. disease and starvation

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What happened

Japanese occupation of the Philippines, Malaya, Singapore, Burma, the Dutch East Indies and Indochina brought mass internment and mass labour conscription. European civilians in the Indies, about 100,000 people, were held in camps where roughly one in six died. Allied prisoners of war were used as labour in violation of the conventions Japan had undertaken to apply: on the Burma-Siam railway some 12,000 of about 60,000 Allied prisoners died, alongside far higher mortality among the estimated 200,000 Asian labourers, of whom up to 90,000 are thought to have died. In Java the occupation authorities mobilised millions of romusha for construction and agriculture, sending about 300,000 abroad, from whom deaths are estimated at anywhere between 77,000 and 225,000 with total Indonesian romusha deaths put at considerably more than 300,000. Rice requisitioning, the collapse of shipping and forced crop substitution produced famine: about 2.4 million people are estimated to have died in Java in 1944-45, and in northern Vietnam the famine of 1944-45 killed between 400,000 and two million people, the higher figure being the Vietnamese official estimate. The Tokyo tribunal found that the ill-treatment of prisoners of war and civilian internees was a matter of policy, condoned and concealed at the highest levels.

Parties

Japan interned Allied civilians and prisoners of war and conscripted millions of Asian labourers across its occupied territories

Disputed

Death tolls for the Java and Vietnamese famines and for Asian labourers on Japanese projects vary widely, since neither the Japanese authorities nor the returning colonial administrations counted the Asian victims systematically.

The denominator

Contemporary colonial estimates give roughly 70 million in the Netherlands East Indies, 24 million in French Indochina, 17 million in Burma, 16 million in the Philippines and about 5 million in British Malaya and Singapore, totalling around 130 million in 1942.

The 4 million aggregates interned Allied civilians and prisoners of war with romusha labourers conscripted across the region - groups of very different size, and the romusha estimates themselves range from 4 to 10 million.

Where the baseline comes from

Japanese occupation of the Dutch East Indiesopen-edited
Romushaopen-edited

On the death toll

The range aggregates the principal counted and estimated components: about 13,000 to 16,800 deaths among European civilian internees in the Indies, some 12,000 Allied prisoners on the Burma-Siam railway and up to 90,000 Asian labourers there, more than 300,000 Indonesian romusha deaths, roughly 2.4 million famine deaths in Java in 1944-45, and 400,000 to 2 million in the northern Vietnamese famine. The Indonesian government's own postwar estimate of total deaths under the occupation was 4 million. Famine mortality figures are demographic reconstructions and carry the widest uncertainty.

Documented forms of violence

Arbitrary DetentionForced LabourStarvation and SiegeMass KillingSexual ViolenceTorture

Civilian internment, the labour regime on the Burma-Siam railway, requisitioning that produced famine and the killing and torture of prisoners are documented in Japanese and Allied camp records, the evidence heard by the Tokyo tribunal and the Dutch postwar inquiries summarised by the NIOD Institute.

Formal findings

International Military Tribunal for the Far East (1948) — Found that the ill-treatment of prisoners of war and civilian internees, including their use as forced labour on the Burma-Siam railway, was a policy condoned and concealed by the Japanese government and high command — source