Do I only get Flanking if my side's engagement token is present?
That is, if I'm the Lannisters, and one of my units is adjacent to a Stark unit, and there's a Stark engagement token between them, and another of my units is ordered to go attack the Stark unit--I don't get flanking here, right? I just remove the Stark engagement token and put a new one between the Stark unit and my new unit, correct?
The rulebook seems to imply this but it never comes right out and says it.