On Two of the "Definitive" Books On WW2 Written In its Immediate Aftermath, "The Challenge to Isolation" and "The Undeclared War" Having Been Written by William Langer and Everett Gleason" - Their Resumes (During the War) Written Below

  Langer - Served in the Office of Strategic Services (precursor to the C.I.A.) as a deputy chief and later as its chief of the research and analysis branch.
  Gleason - Intelligence Chief of the Office of Strategic Services.
  So two fellows with no incentive to sanitize America's role in this bloody affair. Got it.