Atomic Bombing of Nagasaki (1945)
Three days after the destruction of Hiroshima, the United States dropped a second atomic bomb on Nagasaki, Japan on August 9, 1945. The bomb killed an estimated 40,000 people immediately and up to 80,000 by year's end. Japan announced its surrender six days later.
The Mission to Nagasaki
The Nagasaki mission was flown by the B-29 Bockscar, commanded by Major Charles Sweeney. The primary target was not Nagasaki at all — it was Kokura, an industrial city on the northern tip of Kyushu. But when Bockscar arrived over Kokura after a series of mechanical problems and rendezvous delays, the city was obscured by industrial haze and smoke drifting from fires in nearby Yawata. Three passes over the city produced no visual sighting. Fuel was running low. Sweeney turned for the secondary target: Nagasaki. "Fat Man" — a plutonium implosion bomb more powerful than the Hiroshima device — was dropped at 11:02 AM local time. Nagasaki's hilly topography confined much of the blast; the death toll, though catastrophic, was lower than Hiroshima's. The residents of Kokura were unaware for decades that their city had been the intended target. The phrase "Kokura's luck" entered the Japanese language.
Did You Know?
The bomb detonated almost directly above the Urakami Cathedral — Japan's largest Catholic church, the spiritual center of a Christian community that had practiced their faith in secret for 250 years during an era of severe religious persecution. Of the cathedral's 12,000 parish members, about 8,500 died on August 9, 1945.
Japan's Surrender
The Soviet Union had declared war on Japan on August 8, one day after the Hiroshima bomb, and Soviet forces were sweeping through Manchuria. The combination of two atomic bombings in three days and Soviet entry into the war shattered whatever arguments Japan's militarist faction still had for continued resistance. Emperor Hirohito convened an imperial conference. When the Supreme Council deadlocked between those willing to accept unconditional surrender and those who insisted on conditions, Hirohito himself broke the tie. In a radio broadcast on August 15 — the first time most Japanese had ever heard the Emperor's voice — Hirohito announced Japan's acceptance of the Potsdam Declaration. He did not use the word "surrender." The formal surrender was signed aboard USS Missouri in Tokyo Bay on September 2, 1945.
Legacy of the Bombings
The two atomic bombings of Japan remain among the most debated events in modern history. The question of whether they were morally justified — given alternatives that may or may not have existed — has occupied historians, ethicists, and policymakers for eighty years. Nagasaki, rebuilt like Hiroshima, holds its own annual Peace Memorial Ceremony on August 9. The hibakusha — survivors of both cities — have spent their lives as witnesses to nuclear war's human cost, many of them seeking recognition and compensation from their own government, which was slow to acknowledge the radiation-related illnesses that struck survivors for decades after the bombings. Their testimony shaped the global anti-nuclear movement and has kept the memory of what these weapons actually do alive through generations that never witnessed it.