I put up a save before I saw Kransha's post.
However, is it alright if Herding gathers the two other captains. They probably want to torture the captivities first
...then Herding can propose that the Orc Captain finds two/one decent soldier(s) that will lead the captivities back to Dol Goldur who will be the characters you mentioned.
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I lost my old sig...somehow....*screams and shouts*
..............What is this?- Now isn't this fun? >_<
.....and yes, the jumping mouse is my new avatar. ^_^