BAGHDAD, Iraq, Sept. 13, 2005 — The humvees descended on Salhiya in the blink of an eye. Roads were closed and cordons were established as armor-clad soldiers stepped from their vehicles, wary eyes hidden behind dark glasses. As the dismounted U.S. soldiers got closer to the crowd, their tight-lipped expressions suddenly turned into smiles as children circled around for hugs. The children were orphans excited about another visit from the soldiers of A Company, 4th Battalion, 64th Armor, 4th Brigade Combat Team. The orphanage fell under the company’s normal patrol route so the soldiers and the children were well acquainted,...