The Lord of the Rings: The Two Towers (2002) - "Forth Eorlingas" scene

The Rohirrim sometimes referred to themselves as Eorlingas, and this was the battle-cry that King Theoden shouted as he rode out of the Hornburg at Helm's Deep, to meet the Uruk-hai head-on just before Gandalf arrived with reinforcements, "at first light, on the fifth day. At dawn, look to the east."