The tale of Army Pvt. Scott Thomas Beauchamp, the discredited "Baghdad Diarist" for the discredited New Republic magazine, is an old tale: Self-aggrandizing soldier recounts war atrocities. Media outlets disseminate soldier's tales uncritically. Military folks smell a rat and poke holes in tales too good (or rather, bad) to be true. Soldier's ideological sponsors blame the messengers for exposing anti-war fraud. Beauchamp belongs in the same ward as John F. Kerry, the original infectious agent of the toxic American disease known as Winter Soldier Syndrome. The ward is filling up. U.S. military investigators concluded this week that Beauchamp concocted allegations...