The atomic bombing of Hiroshima was one of two nuclear weapons detonated over the Japanese cities of Hiroshima and Nagasaki on 6 and 9 August 1945, respectively.
The two bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in armed conflict.
https://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki
