With Japan’s defeat, World War II finally came to an end. The formal end of World War II took place in suitably dramatic fashion, with a surrender ceremony on board the USS Missouri on September 2, 1945.

In the hours after Truman drops the bomb on Hiroshima, news reports begin to surface of “a city vanished.”

In July 1945, after the success of the Trinity Test, President Truman ordered that the new atomic bombs be ready for assembly and potential use as quickly as possible.