Grahla wants the Lion Guards to receive the knowledge quickly and sends the Vestige to look for them at Camlorn. It's not far away so follow the marker to find General Gautier at the camp outside Camlorn. They can't retake the camp as Faolchu's turned back on their offensive. He's beaten them and nothing matters until this is resolved.
Tell him how to defeat Faolchu and the General says: Another theory? That's the third one today. Don't get in the way, we've got enough trouble as it is.