For those claiming that the US never punishes any of its own, I suggest a casual Google search.
Here's what a minute or two of browsing resulted in-
www.iraqupdates.com...
United States Army Pfc. Jesse Spielman, 23, was sentenced to 110 years in prison after a military jury convicted him for his role in an attack that
occurred March 12, 2006, on an Iraqi family in the Mahmudiya area, south of Baghdad. In that attack, a 14-year-old girl, Abeer Qassim al-Janabi, was
raped and murdered, and her parents and 7-year-old sister were shot to death with the family's own AK-47.
Spielman was convicted of rape, conspiracy to commit rape, housebreaking with intent to rape, and four counts of felony murder, even though military
prosecutors alleged that Spielman served as a lookout, but didn't participate in the rape or murders.
In the same case, Sgt. Paul Cortez, 24, was sentenced to 90 years in prison, and Specialist James Barker was sentenced to 100 years in prison by an
Army judge.
Another private, Stephen Green, who is accused of being the ringleader, will also be tried in federal court on rape and murder charges. He was
dishonorably discharged from the Army due to "anti-social personality disorder" in May 2006, before the Army knew of the crime.