In Afghanistan, the Americans like the Russians, like the British Red Coats, are merely thought of as a visitor who has overstayed their welcome. An Afghan terrorist can be selling carpets on bases during the day and lobbing in gun fire after his evening meal, having noted where the good targets are sited. An army which does not wear a uniform can never ever be beaten.
When they all get out, the war lords will just retake their fiefdoms, if they ever lost them, in the first place!!!