More details on planes rearming we could have it like this…
Planes land every 4th cycles of combat.
(3 cycle of combat is quite a lot keeping in mind fighters carried 1 standard bomb or 2-4 small bombs and some machine gun rounds which is useful for air combat but useless against tanks.)
Attacking planes normally attack in cycle 1-3 and retreat. But may use 2 movement points to rearm and attack the same territory again in cycle 5-7.
(So distance reduces effectiveness of planes but long range aircraft can help counter it.)
Defending planes attack in cycle 1-3, 5-7, etc until it loses ground control on cycle 4, 8, 12 etc and must retreat. If it cannot it is destroyed.