<p>UMM QASR, Iraq — The vanguard of an interim government arrived in southern Iraq yesterday, rolling up in dusty sport utility vehicles after driving from Kuwait City, to establish a civil administration for postwar Iraq.</p>
<p>About three dozen retired officers, bureaucrats and technical experts set up the first Iraqi field office of the Pentagon's Office of Reconstruction and Humanitarian Assistance (ORHA), which will fund and guide the initial rehabilitation of Iraq's human services and infrastructure.</p>