Here is a well illustrated YANK MAGAZINE article that served to answer the U.S. serviceman's questions as to who Harry S. Truman (1884 – 1972) was and why was he deemed suitable to serve as President?
"Mr. Truman now occupies the Presidency, of course, because he won the Democratic Vice-Presidential nomination in Chicago last summer. Two things won him the nomination. First was the fact that he alone was acceptable to Mr. Roosevelt and to both the conservative element of the Democratic Party and its liberal wing. The second was the excellent performance of the Truman Committee in the investigation of our government's spending money for the war-effort...One of the main themes of his campaign speeches last fall was that the U.S. should never return to isolationism."
Click here to read about the busy life of President Franklin Roosevelt.