I was tanking all orcs and giants while keeping Commander Bahreck CC with blind and root. During the battle, he ran off blind for some distance and did not return. He then fell off extended tracking which happens when a mob distance leashes. I wasn't able to find him at this time. Meanwhile, Corbin continue walking to Dobbin and I got the note. Next I ran to Garadain to turn in the note for the 7th ring. After receiving the ring, guess who shows up to attack the coldain camp? Yes Commander Bahreck attacks Garadain. I help the coldain kill Bahreck and he drops a tunic.