Soldiers in chance of death shocker

Watching Charles Kennedy on Newsnight acting like a complete twat and being told so by Paxman (in so many words). He is asking him why he wants a Parliamentary vote when the British Military Commander has already said that the US request for the redeployment of British troops is both "reasonable and sensible". I don't really understand what the issue is. The decision to go to war has been taken and therefore UK troops exist in Iraq. Why does it matter whereabouts they are in action? Of course there are 'hotspots' where the chance of being killed are higher than in others. And. So. What?. This is the military. The soldiers are fully aware of the risks when they join.