Orcs are tortured and mutated Men and Elves who serve the Dark Lord. The first Dark Lord they followed is Melkor, or Morgoth in English tongue, then later Sauron, the last Dark Lord. Sauron followed in Melor's footsteps and wanted to take over Middle-Earth, then spread his will to the rest of the world and have full domination. Melkor had two great underground fortresses called Utumno and Angband, where he formed thousands upon thousands of Orcs to launch an assault on Middle-Earth. Melkor knew that he needed more power if he wanted to overtake the Elves and Dwarves, so he set out to find the Silmarils. The Silmarils are three bright shining clear gems that were forged from the essence of the Two Trees of Valinor, the first trees, and it is said these gems hold great power. While Melkor set out the Silmarils, the Orcs went into hiding with no master to command them. After Melkor's return, many of his Orcs survived in deep caves, pits, chambers, and tunnels of Melkor's fortresses. The Orcs then multiplied and spread to northern Middle Earth in the first war of Middle-Earth. In the First Age Melkor was driven back and banished to the void, Sauron then took his place as the Dark Lord. In the Second Age Sauron build his fortress Barad-Dur in Mordor and began making his army. The Elves and Men took notice in Saurons plans and came together to march into Mordor and confront Sauron to destroy him. Sauron was then defeated that day but his spirit was in the One Ring and still lived. The Orcs fled into caves as they did before and waited for Saurons return. Later Sauron did return but not in the flesh, still inside the ring, and rebuilt his fortress and his armies. He then later was fully destroyed and the ring was thrown into the fires of Mount Doom and the orcs fled into the Dwarven fortresses. They were then almost driven to near extinction by Durin VII when he reclaimed Khazad-Dum. The remaining stayed in caves and are presumed to be extinct over time.