On This Day in History / August 15, 2024 VICTORY DAY–JAPAN.1945: After the 6 and 9 August bombing of Hiroshima and Nagasaki with atomic bombs, the Japanese government announced its intention to surrender “unconditionally,” subject to an Allied agreement to maintain the monarchy. Washington declared a cease-fire immediately. The formal surrender took place on board the USS Missouri in Tokyo Bay on 2 September