I define "dirty tactics" as protecting yourself by putting innocent bystanders in harm's way. It's also called hostage-taking. It's obvious the Iraqi military has zero regard for the lives of the citizens they supposedly protect, and our military is surprised that the Iraqi military, after all the rhetoric, is really out for themselves and no one else.
The soldiers of our military volunteered to potentially die in place of you or I. They would prefer their own death to the death of an innocent citizen caused by their selfish actions.