what do these underlying hex colors for air units mean?

[Rongor]

Hey there, I have thoroughly read the first 100 pages of the manual and scanned the other 200 pages but didn't find the answer:
What do these red and purple hex colors underneath air units say?


This happens occasionally and I suspect it might have something to do with sorties they did during the preceding opponent's turn...

[Hubert Cater]

Hi Rongor,

- Air units will no longer receive supply from an HQ unless they are attached.
- under supplied Air units, due to not being attached to an HQ, will be indicated by a red hatch beneath the applicable Air unit.
- under supplied Air units, attached to an HQ but not to the most optimal supply giving HQ, will be indicated by a purple hatch beneath the applicable Air unit.

Hope this helps,
Hubert

[Rongor]

Thank you!

[Cameraeye]

Does the terrain from which an air unit is placed effect how well it does in combat?

[Hubert Cater]

Not when an air unit is attacking, intercepting, escorting etc., but it may have an effect when it is caught on the ground during land combat, i.e. a ground unit attacking an air unit on the ground. Hopefully that makes sense.