BAGHDAD — Exhaustion and combat stress are besieging US troops in Iraq as they battle with a new type of warfare. Some even rely on Red Bull to get through the day. As desertions and absences increase, the military is struggling to cope with the crisis. Lieutenant Clay Hanna looks sick and white. Like his colleagues he does not seem to sleep. Hanna says he catches up by napping on a cot between operations in the command centre, amid the noise of radio. He is up at 6am and tries to go to sleep by 2am or 3am. But there are operations to go on, planning to be done and after-action reports that need to be written. And war interposes its own deadly agenda that requires his attention and wakes him up. When he emerges from his naps there is something old and paper-thin about his skin, something sketchy about his movements as the days go by. The Americans he commands, like the other men at Sullivan – a combat outpost in Zafraniya, south east Baghdad – hit their cots when they get in from operations. But even when they wake up there is something tired and […]