Military support network

On Saturday, Gayle and I met up with the organizer of our military support network and her husband for drinks and hor dourves. Their son is recently back from Iraq. We were stunned to hear that his unit had suffered a 10 percent causality rate in the 15 months since our son was back from the surge. From everything I read, Iraq is supposed to be relatively peaceful, albeit fragile. Ten percent equates to 65 men killed or wounded. How is it that we don't know this?