The War of the Last Alliance was a significant conflict in the history of Middle-earth, occurring during the Second Age. It was fought between the combined forces of Men and Elves, led by Gil-galad, the Elven king, and Elendil, the leader of the Dúnedain, against the dark lord Sauron. This war aimed to defeat Sauron and reclaim the One Ring, which he had forged to dominate Middle-earth. The war culminated in the decisive battle at Mount Doom, where the Last Alliance laid siege to Sauron's fortress. After a long and brutal struggle, Sauron was defeated, but the victory came at a great cost, leading to the deaths of many heroes, including Gil-galad and Elendil. The war marked a pivotal moment in the ongoing struggle between good and evil in Middle-earth.