A Marine corporal testifying in a court-martial said Marines in his unit began routinely beating Iraqis after officers ordered them to "crank up the violence level."a procedure called "dead-checking" was routine. If Marines entered a house where a man was wounded, instead of checking to see whether he needed medical aid, they shot him.
http://www.usatoday.com/news/world/iraq/2007-07-15-marines_N.htm?csp=34
http://www.usatoday.com/news/world/iraq/2007-07-15-marines_N.htm?csp=34