The clip Rohan will help Gondor from The Lord of the Rings: The Return of the King (2003) with Bernard Hill
The beacons of Minas Tirith! The beacons are lit!
Gondor calls for aid.
And Rohan will answer.
Muster the Rohirrim.
Assemble the army at Dunharrow.
As many men as can be found. You have two days.
On the third, we ride for Gondor and war.
-Forward. -Very good, sir.
-Gamling. -My lord.
Make haste across the Riddermark.
Summon every able-bodied man to Dunharrow.
-Wiill you ride with us? -Just to the encampment.