Truman's Resolve

Having come off vicious battles in Saipan and Peleliu, this volume continues the war with the invasion of the Philippines, Iwo Jima, and Okinawa. The battle for Iwo Jima, coming ever closer to Japan, caused many casualties, the most so far in the Pacific war. But it did not compare to the next battle, the one for Okinawa, where heavy casualties were incurred not only by the troops on the ground but by the sailors on ships, attacked by suicide bombers whose pilot's sole mission was to crash his bomb-carrying plane into an American ship.
With the death of President Roosevelt, Harry Truman faced the momentous decision of dropping the atomic bomb on Japan, wiping out tens of thousands of civilians, or instead invading Japan and face perhaps a million casualties among American forces, given what happened on Iwo Jima and Okinawa.
Truman drooped the bomb and the Japanese, after much soul searching, surrendered. Enter General Douglas MacArthur, appointed Supreme Commander for the occupation of Japan. He retained the emperor against the howling of those calling for revenge and retribution, ending up with a totally peaceful occupation up to the time the occupations forces left Japan.