However, there are some possibilities based on the themes and language:
* "For Rohan!" - A simple and direct battle cry, echoing the spirit of the Rohirrim.
* "For Théoden!" - A cry of loyalty to their king, especially during the battle of Helm's Deep.
* "Ride! Ride to the aid of Gondor!" - A call to action reflecting Rohan's pledge to Gondor's aid.
* "Death to the enemy!" - A common cry of war, particularly during desperate battles.
Ultimately, the specific battle cry would depend on the situation and the leader's choice. Tolkien doesn't provide a definitive cry, leaving room for interpretation and fan-created variations.