The first two atomic bombs were dropped on hiroshima, and Nagasaki, Japan, During world war II.
Hiroshima - August 6, 1945 - Japan’s Emperor Hirohito said his country was going to surrender in World War II in a radio address on August 15
Nagasaki - The United States had already planned to drop their second atom bomb, nicknamed “Fat Man,” on August 11 (Nagasaki) - killed is estimated at anywhere between 60,000 and 80,000