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Record revealed

Japanese Instrument of Surrender, 1945

After six years of brutal global conflict, this document marked the end of the Second World War. It’s one of several instruments of surrender signed by Japanese Commanders in September 1945, formally agreeing to the Allied terms.

A typed document with bullet points listing the terms of Japanese surrender following the Second World War. There are two signatures at the bottom, one to represent Japanese forces, the other for the Allied forces.

Why this record matters

Date
12 September 1945
Catalogue reference
FO 371/46415

After victory in Europe in May 1945, Allied attention quickly turned to ensuring a swift military victory over Japan. Plans had been put in place for the invasion of mainland Japan (codenamed Operation Downfall), politicians believing that the war could last at least another year.

The dropping of the atomic bombs on Hiroshima on 6 August, and then on Nagasaki on 9 August, the latter also coinciding with the Soviet Union declaration of war on Japan, swiftly changed these plans. The Japanese government quickly shared its intention to surrender to Allied forces on 10 August, bringing an end to the Second World War.

On 15 August, Japanese Emperor Hirohito announced the acceptance of the Potsdam Declaration of July 1945, which had set out the terms in which the Allies would accept a Japanese surrender.

This record is one of several instruments of surrender signed by Japanese commanders in September 1945. This one was signed in Singapore on 12 September, ten days after the first formal surrender had been signed aboard the United States ship USS Missouri in Tokyo Bay on 2 September 1945.

These documents set out the complete capitulation of Japanese forces in the various conflict areas across Southeast Asia. In this version, Seishiro Itagaki (Deputy Supreme Commander, Japanese Expeditionary Forces of the Southern Regions) signed the surrender alongside Louis Mountbatten (the Supreme Allied Commander, Southeast Asia) at a surrender ceremony in Singapore’s Council Chambers. It set out the instructions to be given to Japanese forces and the consequences for any disobedience.

Immediately following the surrender ceremony, the Union Jack, which had been taken down at the British surrender at Singapore in 1942, was hoisted to the British National Anthem.

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