Towards the end of World War II, Hiroshima is best remembered as the first city targeted by a nuclear weapon, when the United States Army Air Forces (USAAF) dropped an atomic bomb on the city at 8:15 a.m. on August 6, 1945. Most of the city was destroyed, and by the end of the year 90,000–166,000 had died as a result of the blast and its effects.