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US Atomic Bombings of Hiroshima and Nagasaki Mostly Accurate

“Atomic Bombings of Hiroshima and Nagasaki (1945) In August 1945, the United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki. The bombings caused massive destruction and killed over 100,000 people instantly, with many more dying later from radiation effects. Japan surrendered on September 2, 1945, officially ending World War II.”
Mostly accurate
Confidence: High Checked on March 11, 2026

Summary

The United States did drop atomic bombs on Hiroshima and Nagasaki in August 1945, causing massive destruction. Instant deaths exceeded 100,000 across both cities, and many additional deaths occurred later from radiation exposure. Japan formally surrendered on 2 September 1945, ending World War II.

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Sources 60 searched

visit.archives.gov
nps.gov
trumanlibrary.gov
  • Atomic Bomb: August 6, 1945 | Harry S. Truman

    After Japanese leaders flatly rejected ... Boy, was dropped on the city of Hiroshima. Leveling over 60 percent of the city, 70,000 residents died instantaneously in a searing flash of heat....

  • Decision to Drop the Atomic Bomb | Harry S. Truman

    At 8:15 am Hiroshima time, “Little Boy” was dropped. The result was approximately 80,000 deaths in just the first few minutes. Thousands died later from radiation sickness. On August 9, 1945, another bomber was in route to Japan, only this time they were heading for Nagasaki with “Fat ...

pmc.ncbi.nlm.nih.gov
pbs.org
bbc.co.uk
  • Fact File : Hiroshima and Nagasaki

    On the morning of 6 August 1945 an American B-29 bomber, the 'Enola Gay', dropped the first atomic bomb used in warfare on the Japanese city of Hiroshima · The bomb was dropped by parachute and exploded 580m (1,900ft) above the ground. Between 60,000 and 80,000 people were killed instantly.

bbc.com
  • Hiroshima and Nagasaki: 75th anniversary of atomic bombings

    It is 75 years since the US dropped ... on 6 and 9 August, leading to the end of World War Two. ... The article contains graphic images and details some people may find upsetting. The recorded death tolls are estimates, but it is thought that about 140,000 of Hiroshima's 350,000 population were killed in the blast, and that at least 74,000 people died in Nagasaki...

aasc.ucla.edu
  • Hiroshima and Nagasaki Death Toll

    The real mortality of the atomic bombs that were dropped on Japan will never be known. The destruction and overwhelming chaos made orderly counting impossible. It is not unlikely that the estimates of killed and wounded in Hiroshima (150,000) and Nagasaki (75,000) are over conservative.

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