i think Awni is %100 right, i am assyrian from Iraq we have over 18 accents, and even the Iraqis them selves sometimes they can't understand each other. some other countries Translaors they don't understand us at all.

The best thing is Teach Iraqi language to the Troops or have somebody to translate for them.

as i know iraqis are very difficult to deal with, different cultures and beleives, also the troops will learn how to deal with their mentality and that is very important.