Base Defense Objective Cards

"If you declare an assault against a Rebel or Imperial base, you'll play according the defender's selection from three new base defense objectives — Ion Cannon, Fighter Wing,  or Armed Station."

From "Playing the Long Game"

Rule[]

Base Defense Objective Cards are part of "The Corellian Conflict" Campaign. In each Campaign Turn a team can declare attacks to gain control over a specific location on the map. The attacker always has the initiative. If the location is already controled by the other team and holds a base, the defender chooses one of the three new campaign-specific Base Defense objectives.