The Sack of Eregion
Although initial meetings between Sauron’s forces and the Elves of Eregion, lead by Celebrimbor himself, stemmed the tide of Mordor’s invasion, through sheer numbers Sauron’s hosts pushed the Elves back bit by bit. Gil-Galad tasked Elrond with leading a major force from Lindon to reinforce Celebrimbor’s forces, but was kept back by the bulk of Sauron’s armies, while a vanguard tore through Eregion, laying much of it to waste. Two years after the initial invasion, Sauron had successfully pushed Celebrimbor’s forces back to Ost-in-Edhil, Eregion’s capital, laying waste to it as he retrieved the Rings of Power he had helped forge as Annatar, and attempted to get Celebrimbor to reveal the location of the three Elven rings. Although the Nine and the Seven were handed over, Celebrimbor never betrayed the locations of Narya, Vilya, and Nenya, and he paid for it with his life.
