Take care when you say military outcry. Six years in the Army myself, one tour to Iraq under my belt. I keep in contact with my far flung buddies by playing MW2. My whole friend list is comprised of only military members from across the different branches, and MOS's. From a Marine that was injured in Fallujah, to a National Guardsmen(11B) who lost a highschool buddy to a IED on their deployment one vehicle in front of his, MP's, Medics, Admin, Infantry, even one Ranger. Not one of them has a problem with playing against the taliban(or as them either).
From what I had read it was a mother of a fallen officer who wants the game pulled as it offended her... Granted I don't know every member of every branch and their moral outrage at the topic but from every soldier, marines, airmen and sailor I have talked to none have had a problem with it.