War to Begin All Wars

This war was fought by the Host of the West against Melkor's Host of the North. After the fall of the two lamps, the Valar held council as they knew that the children of Eru would awaken. Varda placed the stars in the night sky, and from these, new planets also arose--after these events, Orome went forth and met the newly awakened elves and discovered that they were afraid of him. Reporting to Manwe, the Valar decided to protect the elves and deliver them from the shadow of Melkor at any cost.

Battles during the War for Sake of the Elves:

Battle of the Powers

Siege of Utumno