Operation Crossroads
There were only seven nuclear bombs in existence in July 1946. The two bombs used in the test were Fat Man plutonium implosion-type nuclear weapons of the kind dropped on Nagasaki. The "Able" bomb was stenciled with the name "Gilda" and decorated with an "Esquire" magazine photograph of Rita Hayworth, star of the 1946 movie, "Gilda". The "Baker" bomb was "Helen of Bikini." This femme-fatale theme for nuclear weapons, combining seduction and destruction, is epitomized by the use in all languages, starting in 1946, of "bikini" as the name for a woman's two-piece bathing suit.
Strategic bombing during World War II
Six days after the detonation over Nagasaki, Japan announced its surrender to the Allied Powers on 15 August 1945, signing the Instrument of Surrender on 2 September 1945, officially ending the Pacific War and World War II. The two atomic bombings generated strong sentiments in Japan against all nuclear weapons. Japan adopted the Three Non-Nuclear Principles, which forbade the nation from developing nuclear armaments. Across the world anti-nuclear activists have made Hiroshima the central symbol of what they are opposing.