President Harry Truman ordered the use of the atomic bomb during World War II in order to?

President Harry S. Truman, warned by some of his advisers that any attempt to invade Japan would result in horrific American casualties, ordered that the new weapon be used to bring the war to a speedy end. On August 6, 1945, the American bomber Enola Gay dropped a five-ton bomb over the Japanese city of Hiroshima.

At the very pinnacle of the Second World War, when Germany and Italy, had already surrendered to the Allies, Japan, was still armed and ready to continue battling against the United States. At first, it seemed the Japanese were in control of everything and they were successfully pushing back American forces and invading more and more of the Pacific battlefront.

In the end, in order to stop Japan from advancing, and from losing more lives, especially American lives, the United States, headed by President Harry S. Truman, decided in 1945 to go with either of two options: first, try to invade Japan, which the Americans already knew was an unlikely successful operation and it would cost even more lives, or drop the atomic bomb that had been successfully develped.

In the end, to cut down on the loses of American lives, stop Japan from further invading China and other Asiatic countries, and losing even more ground on the Pacific, which could lead to dangerous situations with the threat of Japan pushing forth towards the coasts of California, President Truman decided to go with the second option, and authorized the bombing of Hiroshima and Nagasaki as a way to force Japan into surrender.