The resolve of the men of Rohan is sorely tested following the death of Théoden.
'Théoden is slain, and Éomer has charged past the lines and is lost to us. The men of Rohan need someone to lead them, or they will be seized by the same despair that has sapped my own courage, paltry as it is. Where is Elfhelm? Find him and he may help bolster the courage of the Rohirrim at this critical juncture!'
Elfhelm is very near to the corpse of the fell-beast at Kings' End.
Gléowine sent you to find Elfhelm and get him to lead the Rohirrim during this critical moment in the fighting.
The enemy is massing to the south and to the north-east of Kings' End, and Elfhelm wanted you to scout those camps and slay any enemies you find.
Elfhelm fights in a small knot of soldiers near a fallen Mûmak south of Kings' End.
There was the sound of sudden commotion from the direction of Kings' End, and you should return there at once
Horn is at Kings' End.
You heard a loud commotion and should ask Horn what transpired to cause it.