Carrier "Merchant Raider" promotion does not make sense due carrier can't attack
edit: similar situation with anti-aircraft gun with "siege" promotion. Also "blitz" promotion is kind of misleading... it's not taken into account in case of enemy aircraft is attacking twice.
edit: similar situation with anti-aircraft gun with "siege" promotion. Also "blitz" promotion is kind of misleading... it's not taken into account in case of enemy aircraft is attacking twice.