Strong, resilient and hungry for battle and destruction, the Orcs' physical gifts make them perfect warriors. When they have no enemies on hand, the Orcs often fight amongst themselves.
The Orcs' headstrong and warlike nature may be their greatest asset, but it also their biggest handicap. If all the Orcish tribes of Emporea united under one banner instead of endlessly fighting each other, no one could stand against them.
Chronicles of Emporea.