Orcs make up the majority of the Horde, followed by the goblinoid faces of bugbears, goblins, gnolls, and hobgoblin.  Yes there are some Kobold tribes, but they are mainly put to work as labourers, but as has been said as scouts and sappers.<br/><br/>Keep in mind the average Orc alignment is chaotic evil, not lawful evil.  Their prime motivation is the death of their hated enemies, the Dwarfs and the Elves.  Loot and territory are secondary objectives.