The west wing of the Union of Maedhros was commaded by Fingon, who led the armies of his house and the Edain. After the treason of the Easterlings in the east wing, Maedhros didn't come from east Anfauglith as planned, and a dark cloud rose above both Thangorodrim and Fingon's heart. Unexpectedly, Turgon came forth, bringing ten thousand Elves from Gondolin.
Then when Fingon heard afar the great trumpet of Turgon his brother, the shadow passed and his heart was uplifted, and he shouted aloud: Utúlie'n aurë! Aiya Eldalië ar Atanatári, utúlie'n aurë! The day has come! Behold, people of the Eldar and Fathers of Men, the day has come! And all those who heard his great voice echo in the hills answered crying: Auta i lómë! The night is passing!
The result of the following battle was totally tragic: Fingon died and Turgon only could run away after the Men of the House of Hador sacrified themselves. However, the hope of the first battle cry was echoed by Húrin Thalion when he remained as the last standing fighter, shouting: Aurë entuluva! Day shall come again!.