Where once the war in Iraq was defined in conversations with these men by untenable ideas - bringing democracy or defeating al-Qaeda - these days the war in Iraq is defined by different ways of expressing the idea of being weary. It is a theme that is endlessly reiterated as you travel around Iraq. 'The army is worn out. We are just keeping people in theatre who are exhausted,' says a soldier working for the US army public affairs office who is supposed to be telling me how well things have been going since the 'surge' in Baghdad began.
They are not supposed to talk like this. We are driving and another of the public affairs team adds bitterly: 'We should just be allowed to tell the media what is happening here. Let them know that people are worn out. So that their families know back home. But it's like we've become no more than numbers now.'