They do mention this in book 2, but I believe in AMoL they ask them and they clarify that they would not fight for the side of the dark. I am not sure if the Light side was flying Rand's banner during the Last Battle, which is the only other time we see the Horn blown.
Horn of Valere - yes, spoilers
in Wheel of Time Books
Posted
They do mention this in book 2, but I believe in AMoL they ask them and they clarify that they would not fight for the side of the dark. I am not sure if the Light side was flying Rand's banner during the Last Battle, which is the only other time we see the Horn blown.