By the way, the Brigade Combat Team is the larger (3-5 combat battalions of different types, plus all support units) independent unit. BCTs can act completely independently for prolonged periods of time. Here is the website of the 3rd Heavy Brigade Combat Team
I saw one of those sheiks in Anbar say that Begdad would settle down, if Anbar was dealt with. Apparently the problems are related. In fact, it now sounds like Bagdad triouble comes from the surrounding areas.
Thanks to all of you for the very useful information. What I’ve learned from this thread will help me better understand these reports from Iraq and Afghanistan. Off to church now. We pray for the safety of our troops, and for the success of their mission.