On a recent day, some of the 2,000 soldiers of the 1st Iraqi Army Brigade patrolled a violent neighborhood in West Baghdad, while more than 200 miles to the north, soldiers of the 1,500-strong 3rd Iraqi Army Brigade were on a raid near Mosul. They represent two different Iraqi units and both are backed by the U.S military. The 1st Iraqi Army Brigade works with the U.S. Army’s 3rd Infantry Division in Baghdad and 3rd Iraqi Army Brigade trains and works with U.S. Army’s 25th Infantry Division near Mosul.Full Story