Aragorn: I am Aragorn, son of Arathorn, this is Gimli, son of Gloin, and Legolas of the woodland realm. We are friends of Rohan, and of Theoden, your king
Eomer jumps off horse, takes off helmet: Theoden no longer recognizes friend from foe, not even his own kin. Saruman has poisoned the mind of the King and claimed lordship over these lands.