All entries / Claim checks
Did Japan sign the formal Instrument of Surrender on 15 August 1945?
Verdict: False. No. 15 August marks the announcement and spread of surrender news. Japanese representatives signed the formal Instrument of Surrender on 2 September 1945. The dates refer to different stages.
Context of the claim: An editorially composed question distinguishing dates. It is not attributed to a particular person or outlet, nor used to assess how widely the claim circulated.
Basis for the verdict
A Guam prisoner-of-war photograph is catalogued as showing the aftermath of Hirohito’s surrender broadcast on 15 August 1945. A separate photograph at Lae records personnel reading a surrender-news special edition that day. These records support the circulation of the news, not the signing of the formal instrument. Source 1, Source 2
The signature block in the instrument published by the U.S. National Archives gives 2 September. A separate film catalogue likewise dates the signing to that day. Source 3, Source 4
Scope of this check
This question concerns only the date of signing the formal instrument. The August broadcast audio was not checked, and no broadcast quotations or precise transmission times are given. The interpretation of the two photographs relies on museum descriptions. Individual theatres’ surrender arrangements and the cessation of fighting lie outside this check.
Sources and locators
- Photograph of Japanese prisoners on Guam after hearing Hirohito’s surrender broadcast (descriptive title)（Australian War Memorial）
Accession P00444.098; web record C42914; Description: GUAM 1945-08-15; Naval Historical Collection · Accessed: - Photograph of Australian servicemen at Lae reading a special edition announcing Japan’s surrender (descriptive title)（Australian War Memorial）
Accession 094950; web record C71477; Maker Wilson, D H; Date made 15 August 1945; Description · Accessed: - Surrender of Japan (1945) — Instrument of Surrender（U.S. National Archives and Records Administration）
NAID 1752336; Record Group 218, Records of the U.S. Joint Chiefs of Staff; instrument pp. 1–2; web Transcript paragraphs 1–3 and signature blocks · Accessed: - Tokyo surrender（Australian War Memorial）
Accession F01272; Maker Driver, Roy; Date made 2 September 1945; Description opening sentence; film duration 7 min 46 sec (catalogue only, no verified timecode) · Accessed: