Orcs: Second Age

Sometime around SA 1000, Sauron reappeared in Middle-earth and made the land of Mordor his realm, and then started to build the foundations of Barad-dûr. During the War of the Elves and Sauron in SA 1700, the Orcs formed the main host of Sauron's power. Despite the immeasurable number of Orcs present, the battle was won by the Elves and the Númenóreans due to their united force, superior weaponry, greater strength and stature and combat skill.