"Medal awarded for fighting in Strand of the Ancients"
Strand of the Ancients Mark of Honor was a reward for completing a game at the Strand of the Ancients. Players of the winning faction received three, and players of the losing faction just one. These, and [Isle of Conquest], were not used to turn in for any PvP rewards unlike any other marks, and served no purpose.
Patch 3.3.3 (2010-03-23): You no longer receive marks from participation in Strand of the Ancients. Existing marks can be traded in for [Commendation of Service].