WASHINGTON - John Riggs spent 39 years in the Army, earning a Distinguished Flying Cross for bravery during the Vietnam War and working his way up to become a three-star general entrusted with creating a high-tech Army for the 21st century. But on a spring day last year, Riggs was told by senior Army officials that he would be retired at a reduced rank, losing one of his stars because of infractions considered so minor that they were not placed in his official record. He was given 24 hours to leave the Army. He had no parade in review, no...