A B-29 called the Enola Gay dropped an atomic bomb called "Little Boy" on Hiroshima on this day in 1945. This is the first use of an atomic bomb in war. A second is dropped on Nagasaki three days later. These are the only two uses of an atomic weapon in war to date. They cause comparatively few casualties. (Many more peole died in the fire bombing of cities such as Dresden and Tokyo) In modern terms they are very small bombs, but they manage to convince the Japanese to surrender and end World War II.