From Truman's small-town, turn-of-the-century boyhood and his transforming experience in the face of war in 1918, to his political beginnings in the powerful Pendergast machine and his rapid rise to prominence in the U.S. Senate, McCullough shows a man of uncommon vitality and strength of character. Here too is a telling account of Truman's momentous decision to use the atomic bomb and the weighty responsibilities that he was forced to confront on the dawning of a new age.