On August 6th and August 9th of 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki during World War 2. Both bombings killed up to a total of 150,000 to 246,000 people with most being civilians and remain the only uses of nuclear weapons in an armed conflict. Japan announced its surrender to the allies on August 15th, six days later after the bombing of Nagasaki and the Soviet Union’s declaration of war against Japan and invasion of Manchuria. The Japanese government would then sign an instrument of surrender on September 2nd, bringing an end to World War Two. The bomb was created in the Manhattan project with the involvement of 5,000 scientists and they produced two nuclear bombs “Little Boy” (an enriched uranium gun type fission weapon) and “Fat Man” (a plutonium implosion type nuclear weapon). On August 6th 1945, a B-29 bomber named “The Enola Gay” dropped “Little Boy” on Hiroshima and on August 9th 1945, a different B-29 bomber named “Bockscar” dropped “Fat Man” on Nagasaki. Although the bombings were brutal and sad the current president of that time Harry Truman said that it was necessary to not only end the war but to also prevent the losses of any more American soldiers.