For the last 40 years or so, I've been working on a CMFI-GL scenario - it's kind of my life's work.
What should happen is that:
1- side A attacks
2- side B get some reinforcements, quite a way off, which should either counter-attack or relieve side B (depending how much progress side A has made)
I thought I had set these forces up in the AI editor to counter-attack. I selected those units, and gave them an objective (in the AI-plan section, painted the objective on the map).
But they're just milling about on the edge of the map. Are there any gotchas I'm missing...?