Battle of the Ice

The Battle of the Ice was a battle that Melkor and his forces surprised the Valar and won. The victory established snow and winter in Arda. Melkor, being the creator of ice, would later set up Utumno in the far northern reaches of Arda. This was the final battle that Melkor's forces won, for after this battle--Tulkas and his warrior Maiar and chiefs descended into Arda.