On 6 August 1945, the United States used a massive, atomic weapon against Hiroshima, Japan. While Japan is still trying to understand this devastation, three days later, beat the U.S. again, this time on Nagasaki. The Enola Gay was a B-29 Superfortress part of 509: e Composite Group.
The Enola Gay was escorted by two other bombers who carried cameras and a variety of gauges. Three other planes had left earlier to note that the weather conditions of possible targets.
It had been four cities selected as possible targets. Hiroshima was Kokura, Nagasaki, Niigata and cities chosen because they had been relatively untouched by war. Target Committee wanted the first bomb to be "sufficiently spectacular for the importance of the weapon to be internationally recognized when publicity on it was published."