Orcs are Sauron's Infantry for the Battle of Middle-earth.
Sauron's Known Infantry is Orcs, are Dangerous Enemies of Middle-earth. They have used for Battlegrounds and Sieges during the War. Later, Orcs, and all of Infantry are seen in the Mordor during the Battle of Middle-earth. After Sauron was Completely Destroyed, all of Orcs along with Reinforcements were Dissolved.