The ancestors of the Rohirrim called for aid for Gondor because they were attacked by the Balchoth who frequently made raids on the eastern side of Anduin until the people left. Cirion learned from his spies that the Balchoth were gathering a great army to attack the province of Calenardhon on the west side of the river and the defence there was too weak for an attack. Cirion prepared to lead an army to Calenardhon and sent six riders to ask for help. These went through the Balchoth army and five were killed while one named Borondir made it to the land of Éothéod and delivered his message. Eorl the Young realized that if Gondor fell soon his people might too. So Eorl led 7,000 riders and hundreds of mounted archers on the journey to the 500 mile trip to Calenardhon.
The Balchoth had built many boats on the side of Anduin at the Undeeps of Calenardhon and came over and crossed the river and with their superior numbers overcame the forces on the west bank easily. Soon Cirion came with an army of reinforcements, but the Balchoth cut them off and drove them to the north over the Limlight to the Field of Celebrant and then a host of Orcs came and attacked Cirion's forces driving them to Anduin. When the situation looked bleak for Gondor the Éothéod arrived and crossed the Undeeps into Calenardhon and came over to the Limlight to attack the Wainriders and the Orcs from the rear. This combined force of Gondor and the Éothéod drove the Balchoth across the Limlight then slew the invaders until Calenardhon was free.
Soon after the battle the land became Rohan and Eorl swore and oath to Gondor to help them in their time of need.
Portrayal in Adaptations
Translations around the World
|Foreign Language||Translated name|
|Chinese (Hong Kong)||凱勒布蘭特平原之戰|
- ↑ 1.0 1.1 Unfinished Tales, Part Three: The Third Age, II: "Cirion and Eorl and the Friendship of Gondor and Rohan"