Coupla more questions.
Can someone attack with just one ground unit and lots of air support?
In recent games this has not been happening so much, people have built a lot of AA guns.
Typically the player with air superiority (sometimes vast) attacks with 1 infantry and like 25 air units, and so 24 unsupported air units. based on the rules we saw no reason to say you can't.
neither of these has ever happened, but related:
If you attacked across river with just mech units, and so no ground units in the front line in the first round of combat, does your air/artillery still fire as unsupported units even though you have no ground units?
Similarly:
Suppose all your paras were shot down in air to air, would your ground support still fire?
Suppose the paras were finished of by AA, does the air support still fire?