A US infantry soldier is sitting feebly in his damp bunker. He is still wearing his bulletproof vest. His right hand is wiping his head. In his left hand, he is tightly holding a khaki desert battle helmet. His eyes are vacant and you can really feel his fatigue. The battle involving his platoon and the Taleban militias, who often stealthily come to their protective bunker in the Korengal valley, east Afghanistan, has just concluded, but only tem