The destroyer has special anti-submarine capabilities. Four artillery units are included for each nation. Existing Units Battleships now must be hit twice to be sunk. Damaged battleships can still attack or defend. They can be repaired when adjacent to a friendly industrial complex.
Submarines now have the ability to travel through enemy occupied seazones.
Two changes for transports . The movement rules for transports are changed. Bombers have three new abilities now. The bomber unit is able to carry a paratrooper unit. They can also conduct strategic bombing on an anti-aircraft gun.