Not to be insensative, but the military is fighting to protect freedom.
While reading the first amendment, one can (and is allow to) infer that it guarentees you the right to self expression. Freedom of Speech, etc.
Which means that no matter what the content is based around, as long as it doesnt pass the "Three Pronged Test" and is deemed 'obscene', that its your freedom to publish it. When it comes to our everyday life, its a great thing. Unfortunately, it also effects the people who have really far out there ideas and expressions (Westboro Baptist Church and Ku Klux Klan).
Can I see how it will be offensive? Yeah, I can see how it could tug on some peoples emotions. But thats why they don't have to buy it... Its their freedom to make that game, and allow people to play as the Taliban.
And its only symbolic. As the Taliban your not given missions to blow up army depos and civilians with IED's. If you look at Modern Warfare, you play as factions that are heavily implied to be terrorist groups. Yet you didnt see people bitching over that? (guess they were too busy taking offense to a terrorist attack in an airport).
The fact that the Military is banning that game purely off of something symbolic is really wrong. If they do this, why not ban Modern Warfare for having a terrorist attack, for showing soldiers die, and having you play as terrorists despite not given a faction name?
Didnt FFXIII's plot involve terrorism (one of them does)? LETS BAN THAT TOO. Gears of War 2 had invading bad guys, obviously criticizing the Bush administration for invading Iraq and Afghanistan. BAN IT TOO. Katamari Demaci is obviously offensive because its implied that that alien is a terrorist: he spreads fear and terror and destroys valuable things just to feed the cosmos.
ITS UPTO PEOPLE ON AN INDIVIDUAL LEVEL TO DECIDE WHAT IS OFFENSIVE AND WHAT IS NOT. WHILE AN OBSCENE TEST IS FINE, SERIOUSLY. IF A SOLDIER IS NOT OFFENDED, LET THEM BUY THE GAME. IF THEY ARE, NO ONES MAKING THEM PLAY.
Seriously. Stuff like this makes me want to shout.