The only man to ever serve as both secretary of state and secretary of defense, his greatest achievement may have been devising the Marshall Plan, which rebuilt a devastated Europe after World War II.
Mary P. Hardy's family was less than pleased, then, when she announced her engagement to Arthur MacArthur, Jr., the young hero of the Union's important victory at Missionary Ridge.
Interview with Andy Carroll, author of War Letters: Extraordinary Correspondence from America's Wars, the compilation of letters that inspired the American Experience documentary.
