The Rise of Bowe Bergdahl

I haven't come across a comment on this, but you might have noticed that Bowe Bergdahl was a private when captured by the Taliban. Today he is a sergeant. The army promoted him to sergeant on June 17, 2011, while he was being held captive in Afghanistan.  That's the hard way to get promoted--I mean, if Bergdahl was a deserter. Hats off to this trooper, right? But now that he's home, will the army bust him back to corporal?