The United States set the first atomic bomb off on an attack against Japan in 1945. The United States had warned Japan that we would use nuclear warheads if they did not retreat. They did not, so we followed through with our threat and bombed Hiroshima and Nagasaki.
This is a photo of the fighter plane that dropped the atomic bomb.
Here's a picture of the bomb that was dropped on Hiroshima.
The first Atomic Bomb used in War
The United States set the first atomic bomb off on an attack against Japan in 1945. The United States had warned Japan that we would use nuclear warheads if they did not retreat. They did not, so we followed through with our threat and bombed Hiroshima and Nagasaki.
This is a photo of the fighter plane that dropped the atomic bomb.
Here's a picture of the bomb that was dropped on Hiroshima.