And it came to pass that Moroni and his army met the Lamanites in the valley, on the other side of the river Sidon, and began to fall upon them and to slay them. And the Lamanites did flee again before them, towards the land of Manti; and they were met again by the armies of Moroni. Now in this case the Lamanites did fight exceedingly; yea, never had the Lamanites been known to fight with such exceedingly great strength and courage, no, not even from the beginning.