You're confusing that with the other battle the Valar made against Morgoth, right after the Elves awoke in Cuivienen. There, Tulkas wrestled with Morgoth, and bound him with Angainor, the chain of Aule. The War of Wrath is the battle that took place after Earendil sailed to Valinor.
Source? The silmarillion.
Quote:
Of the Coming of the Elves, Chapter 3 of the Silmarillion
But at last the gates of Utumno were broken and the halls unroofed, and Melkor took refuge in the uttermost pit. Then Tulkas stood forth as champion of the Valar and wrestled with him, and cast him upon his face; and he was bound with the chain Angainor that Aule had wrought, and led captive; and the world had peace for a long time
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OTOH, the War of Wrath never directly mentions the Valar.