To whom did Darby expose the "torture and scandal, to his superiors who then went on to conduct an investigation, or to the press?
He slipped the evidence anonymously under CID's door, then they investigated it.
An Army spokesperson told the press corps that an investigation was underway back in January 2004.
Only after 60 Minutes ran an expose of some of the pictures that were released did the Abu Graibe incident become a scandal in April 2004.
As a Specialist who was outranked by ringleader SGT Graner, he took appropriate actions to disclose these reprehensible acts by a few rogue MP's.