…whether anyone who served with Bergdahl in Afghanistan is defending him.
The answer appears to be “no”:
To date, not a single member of Bergdahl’s platoon has come forward to say that he was a loyal solider who was captured while he was doing his duties.
I bet they’ll manage to find one and trot him/her out, though. And somehow that will invalidate the unanimity of the others.
[NOTE: Here's a pretty good summary of the Bergdahl incident so far.]