The Nirnaeth Arnoediad, also known as the "Tears Unnumbered," is a significant battle in J.R.R. Tolkien's legendarium, specifically in the history of Middle-earth. It takes place during the First Age and is part of the ongoing conflict between the Elves and the forces of Morgoth. This battle is marked by betrayal and tragedy, leading to a devastating defeat for the Elves and their allies. The battle is notable for the involvement of various factions, including the Noldor and the Men of Hithlum. Despite their initial strength, the alliance is overwhelmed by Morgoth's forces, resulting in heavy losses. The aftermath of the Nirnaeth Arnoediad has lasting repercussions on the fate of the Elves and the history of Middle-earth.