History is filled with stories of barbaric warriors who cause wanton destruction. They have been titled by ancient historians as "savages," "uncivilized," and even "the Scourge of God." But what makes them the most terrifying warriors in history? What sets apart the supposedly well-trained soldier of the Roman Empire from the bestial Goths? Or the noble samurai from the ruthless Mongol? Some could argue they were terrifying only because they weren't the ones writing the history - they were the outsiders. But they would be giving only a partial answer.