How Air ever been used succefully in war?
YES
In world war two no convey escorted by airship lost a single ship to a sub attack.
Now as far as the game goes. Make it instead of an air unit make it a defensive only that can move over any terrain and see subs unit immune to everything but planes?
YES
In world war two no convey escorted by airship lost a single ship to a sub attack.
Now as far as the game goes. Make it instead of an air unit make it a defensive only that can move over any terrain and see subs unit immune to everything but planes?

.