Battle of the Gwathlo

The Battle of the Gwathló was the decisive battle of the War of the Elves and Sauron that brought an end to Sauron's power for many centuries.
== History ==
After being driven back from the Grey Havens and after heavy losses at Sarn Ford, Sauron's forces regrouped and joined with his forces in Tharbad where they were assailed by the pursuing forces of Gil-galad and Númenor and then by another force of Númenóreans sailing up the Greyflood and attacking from their rear.
In the battle Sauron and his armies were utterly routed. The remaining survivors narrowly escaped but were assailed again by the Númenóreans in the east of Calenardhon and destroyed, leaving Sauron with little more than a bodyguard to escape back into Mordor.
The ensuing victory left Sauron's power crippled but not destroyed and he slowly rebuilt his strength over a thousand years until the thirty-third century, when he challenged Ar-Pharazôn for the over-lordship of Middle-earth.