You might recall the news reports of an MP unit that was ambushed in Iraq last week and how they handled the fight. The After Action Report is here and it makes very interesting reading. It describes the engagement in considerable detail and concludes with this:
Those seven Americans (with three wounded) killed in total 24 heavily armed enemy, wounded 6 (two later died), and captured one unwounded, who feigned injury to escape the fight. They seized 22 AK-47s, 6x RPG launchers w/ 16 rockets, 13x RPK machineguns, 3x PKM machineguns, 40 hand grenades, 123 fully loaded 30-rd AK magazines, 52 empty mags, and 10 belts of 2500 rounds of PK ammo.
After reading the whole thing there's little wonder the insurgents have turned their attention to marketplace crowds and elementary schools.