As a young man, Theodore Roosevelt struggled through a brutal winter on a cattle ranch in the Dakota Territory. The adventure launched a love affair with the western U.S.
In 1947, former Secretary of War Henry Stimson recalled the agonizing decision to use the bomb: "This deliberate, premeditated destruction was our least abhorrent choice."
U.S. military leaders drew up elaborate plans to invade Japan, with estimates of American casualties ranging as high as two to four million, given the terrible losses at Iwo Jima and Okinawa.
As defeat became inevitable in the summer of 1945, Japan's government and the Allies could not agree on surrender terms, especially regarding the future of Emperor Hirohito and his throne.