The insurgents are terrorists. They don't belong to an Army, they aren't acting on behalf of any government, they murder innocent men, women, and children.
Seems to work both ways.
CAMP PENDLETON, California (AP) -- A Marine squad leader who led an attack that killed 24 Iraqi civilians shot five men as they stood with their hands up and told comrades to lie about it, a Marine sergeant testified.
Sgt. Sanick P. Dela Cruz said that in the moments after a roadside bomb hit a Humvee in his convoy November 19, 2005, killing a comrade, he saw five men standing by a white car with their hands interlocked behind their heads. The squad leader, Staff Sgt. Frank Wuterich, then fired about six to eight rounds at the men, Dela Cruz testified.
"They were just standing, looking around, had hands up," Dela Cruz said. "Then I saw one of them drop in the middle. I didn't know what was going on, sir. Looked to my left, saw Staff Sergeant Wuterich shooting."
http://www.cnn.com/2007/US/05/10/iraq.haditha.ap/index.html