Japan continued fighting even after the war in Europe concluded. Wanting to end the war quickly and prevent more U.S casualties, Harry S. Truman, who was the president at the time, decided to use the newly developed atomic bomb on Japan. The Enola Gay dropped an atomic bomb on Hiroshima, Japan on August 6, 1945, killing about 78,000 people and injuring 100,000 more. On August 9, a second bomb was dropped on Nagasaki, Japan, killing another 40,000 people. The two bombs annihilated both cities.