Melee units won’t attack flying units | Forums

[Genacide]

This is an issue in story mode if the boss is flying like bounty hunter Kyle. Also issue in pvp only arrow type units can attack flying units.

[ThatDarnSteve]

This is actually by design.

[Pinkdonkeysoap]

Imagine trying to attack a bird with a sword... You need a bow/arrow. I'd say its fine the way it is.