Find the prison inside Inner Hold in Valiance Keep and speak to the deserter.
Unit S... Unit S.... hmmmpph.... don't make any sense... it oughta be named after a town...
Darkshire was sent to Dragonblight. The Goldshire boys were sent to the Fjord. Where did I hear...
Oh, yes... the deserter! There's a turn-tail in the barracks prison. Got thrown in not too long ago. Kept saying that "S" stood for suicide.
Look for the deserter. He might have some information for you.