Essentially, the idea behind this would be that a helicopter would be able to follow alongside ground units, and would provide assistance if the ground units accompanied enemies. Basically, it'd be like a feature where the helicopter would be attached to the ground unit, and it would fly wherever the infantry unit went. I know this seems a tad OP (that's actually why I didn't request that this be for planes too. That'd have been a tad on the seriously OP side), so I have some suggestions for balancing:
1) The helicopter can only accompany the unit to the edge of its patrol range when taking off from the nearest airbase. So as long as the ground unit stays within that radius, it's fine. If, however, you move the unit too far into enemy territory or some such, the helicopter will split off and head back to base.
2) The helicopter has to head back to base periodically to refuel (of course).
3) If this still seems OP, perhaps the helicopters should add to the amount of soldiers in the formation? So like the group of 5 units, after which it starts to lose effectiveness? Maybe the helicopters attached to the formation should add to that? I dunno. Anyhow, that's all!
1) The helicopter can only accompany the unit to the edge of its patrol range when taking off from the nearest airbase. So as long as the ground unit stays within that radius, it's fine. If, however, you move the unit too far into enemy territory or some such, the helicopter will split off and head back to base.
2) The helicopter has to head back to base periodically to refuel (of course).
3) If this still seems OP, perhaps the helicopters should add to the amount of soldiers in the formation? So like the group of 5 units, after which it starts to lose effectiveness? Maybe the helicopters attached to the formation should add to that? I dunno. Anyhow, that's all!