At the end of the jewels there came a war
that swiftly did what could not be done before.
Its name spelled fear far and wide
and if it had come sooner, not so many would have died.
War of Wrath
Tried "Great Battle" which was NOT the answer.
The War of Wrath, or the Great Battle, was the final conflict against Morgoth at the end of the First Age, and the greatest war ever fought in all of Middle-earth.
Tolkien Gateway: War of Wrath
Content contributed by Rich Thomas