A trial begins this week for a third Marine accused of hazing a lance corporal who later committed suicide at their base in Afghanistan. Lance Cpl. Carlos Orozco III is accused of putting his foot on the back of Lance Cpl. Harry Lew, ordering him to do push-ups, and pouring sand in Lew's face. Orozco has been charged with assault, humiliating Lew, and cruelty and maltreatment. His general court-martial is scheduled to begin Tuesday at Marine Corps Base Hawaii in Kaneohe Bay. Two other Marines have already been tried for allegedly mistreating Lew, of Santa Clara, Calif., in the hours before he killed himself on April 3. A lance corporal pleaded guilty to assault and was sentenced to 30 days in jail and demoted to private first class. A sergeant was acquitted by a court martial jury. The accusations against Orozco are among the most extensive of any in the case, which involves how the Marines reacted when Lew, one of their squad mates, fell asleep on watch duty late at their remote patrol base in Helmand province ....