In july 1945.
President Harry Truman gave the order for atomic bombs to be dropped on Hiroshima and Nagasaki.
President Truman gave the order to drop an atomic bomb on Japan during World War II. He was the first and only U.S. President to order the use of an atomic bomb as a military weapon.
Truman authorized the dropping of the bombs.
Harry S. Truman (23rd US President) succeeded to the office on April 12, 1945 when Franklin D. Roosevelt died. Although both FDR and Truman had classified knowledge of the Manhattan Project, no decision could be made on the use of any A-bombs until they were shown to actually work. The first nuclear detonation came on July 16, 1945, two months after FDR died, and it was Truman's decision to actually employ them to force the surrender of Japan. Hiroshima was struck on August 6 and Nagasaki on August 9.
The order came from President Truman.
Truman gave the order to drop nuclear bombs on Hiroshima and Nagasaki.
In order to end WWII, which he did.
President Truman got the order to use them against Japan.
It was near the end of World War 2, and Japan wouldn't surrender with no terms to the US, so President Harry S Truman gave the order to drop 2 atomic bombs on Japan. One oh Hiroshima, the other on Nagasaki. Japan surrendered then.
U.S. President Harry S Truman
Harry S. Truman
If you refer to the nuclear bombs that ended WWII, President Harry Truman gave the order for them to be dropped on Hiroshima and Nagasaki.