An exercise for the student...
Go through mainstream media stories on this subject, and try to find anything remotely related to the concept of "enemy killed," or "dead insurgents."
Only "Iraqis" die. Only women and children are mentioned by the hospitals.
Insurgent deaths were mentioned only in the Najaf battle, when the firefights took place in a cemetery and there was no way they could get away with labeling the combatants as "civilians."