If an amphibious assault involves a sea combat and air units are involved, the attacker must assign each air unit to either the sea zone or the territory being attacked.During the Conduct Combat phase, those air units participate in combat only in the space to which they were assigned.
If an amphibious assault involves a sea combat, any air units participating in the assault must move to either the sea zone or the land territory. They will then participate only in the part of the assault to which they have moved