Then they perform as well as tanks. Fighters and bombers are the two air units. Bombers can be used to attack enemy units or the industrial production certificates of a country directly. The ship models in the game are equally versatile. The transport is used for ferrying troops and AA guns across water.
Submarines are excellent weapons for attacking superior forces.
They can launch an initial strike and be gone before the defender has a chance to counterattack. Carriers act as mobile bases for your fighters and battleships provide the muscle. They also have the ability to bombard enemy coastlines prior to an amphibious landing. The destroyer has been added especially for Iron Blitz in order to balance out the submarine. It completely negates the submarine's first attack power.