HOUSTON — Army Sgt. Bowe Bergdahl is scheduled to appear Thursday at a military preliminary hearing that could provide the first revealing glimpse into his capture six years ago by Afghan Taliban forces and his return to the United States in a controversial prisoner swap that linked his fate with President Barack Obama's legacy. Bergdahl, 29, of Hailey, Idaho, was charged with desertion and "misbehavior before the enemy" after disappearing from his post in eastern Afghanistan. If Bergdahl's case goes to court-martial and he is convicted of the more serious misbehavior charge, he faces a potential life sentence. At Thursday's...