The Slayer's Guide to Orcs

Orcs are the foot soldiers of evil, the creatures that make up the hordes of darkness that threaten to overwhelm the good peoples and turn the entire land into a region of little else than slaughter and depravity. Most Games Masters use them as the guardians of low-level dungeons, just a slight step above kobolds as a threat. Often they are simply portrayed as evil humans and are given little more thought than that.