There are only enough (double sided) control markers for the islands included in the game. However, your solution would work if you have another A&A game that you could get control markers from.
Bombing your own airfields?
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Hi! Simple enough question I guess. can you bomb your own airfields? I would vote no to that, but haven’t seen anything about it in the rules. Would be very effective if you’re on the verge of losing an island and it’s fields. What do you guys say?
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I think the rules are pretty clear that you can only attack enemy airfields. See page 16.