20019
1945 (not including testing)
In 1945 two atomic weapons were used against Japan .
The atomic bomb was invented in 1933 by Leo Szilard, but it took the Manhattan Project (1942 to 1947) to actually build the first ones.
1945
The atomic bombings of Japan took place in August of 1945. While there were numerous nuclear tests on U.S. soil, no atomic bomb was dropped on the U.S. Japan is the only country to have suffered such an attack.
1945 during world war 2
It was December 8th 1941 when the US dropped the bombs on Japan.
The first atomic weapon used in combat was dropped on Hiroshima, Japan on 9 August 1945. The second was dropped three days later, this time on Nagasaki, Japan.
1945
1942
1945
The first atomic bomb was made August 1945. My ? to you is," Why did they even start making those atomic bomb anyway?