Maj. William Vickers, 36, is accused of dereliction of duty for allegedly letting his men mistreat prisoners at Camp Whitehorse, a small facility outside Nasiriyah, about 180 miles outside Baghdad. He is the first of eight reservist Marines charged with abusing prisoners to undergo a court hearing. One of those prisoners died. Military prosecutors say Vickers failed to prevent his guards from keeping Iraqi prisoners awake and on their feet 50 minutes of every hour for hours on end. The prisoners, who were handcuffed behind their backs, also had bags covering their heads part of the time. However, Col. William...