Rohan

Arise, arise, Riders of Théoden!
Fell deeds awake: fire and slaughter!
spear shall be shaken, shield be splintered,
a sword-day, a red day, ere the sun rises!
Ride now, ride now! Ride to Gondor!
THE RETURN OF THE KING, BOOK V, CH. V: "THE RIDE OF THE ROHIRRIM"

Théoden, son of Thengel and Morwen Steelsheen, was the seventeenth King of Rohan, last of the Second Line of the royal House of Eorl.

https://www.tumblr.com/middleearthtolkienfantasyart/715232128783253504/arise-arise-riders-of-th%C3%A9oden-fell-deeds-awake