The Most Dangerous Man in America: The Making of Douglas MacArthur by Mark Perry

The Most Dangerous Man in America zeroes in on what might be called the critical years of MacArthur's military career -- the close to 13 years of FDR's presidency.

Boiled down it's the story of creative conflict -- between FDR and MacArthur through those years, and between MacArthur in command of the army and Ernest King from the navy over who should run the campaign against Japan.