The delivery system for these bombs, the Superfortress, represented the latest advances in American aeronautical engineering and bomber design, and its use in the skies over Japan reflected the evolution of strategic bombing doctrine. Another atomic attack on Nagasaki followed three days later. On August 6, 1945, the crew of a modified Boeing B-29 Superfortress named Enola Gay dropped the first atomic bomb used in warfare, called “Little Boy,” on the city of Hiroshima, Japan.
