HIT, Iraq, June 4, 2006 – The infantry isn't going to move far without help from a bunch of oil-stained soldiers. Just 11 soldiers are responsible for keeping the vehicles of Task Force 1-36 here running. Army Pfc. Guillermo Armendariz and Pfc. James Vail work to change an engine in a Bradley fighting vehicle in Hit, Iraq, June 3. Photo by Jim Garamone (Click photo for screen-resolution image);high-resolution image available. In this environment, it's a particularly tough job. Sand and dust clog intakes and contaminate oil. The infantrymen are driving the vehicles as much in a month as they used...