On Aug. 6, 1945, during World War II, the U.S. B-29 Superfortress Enola Gay dropped an atomic bomb code-named "Little Boy" on Hiroshima, Japan, resulting in an estimated 140,000 deaths. (Three days later, the United States exploded a nuclear device over Nagasaki; five days after that, Imperial Japan surrendered Our school also. Conducted a rally related to the Hiroshima and Nagasaki day.