All types of Anti-Aircraft.

Mobile Anti-Aircraft (AA) is a class of modern units used to combat enemy aircraft such as Bombers and Fighter planes.

The first unit of this class, the Anti-Aircraft Gun, becomes available at the Factory in the Industrial age small Industrial Age, along with the first fighter planes. Production and upgrading of Anti-Aircraft units costs both Food Food and Wealth Wealth.

Age Unit Type
Ancient Age Ancient Age None Unavailable
Classical Age Classical Age None Unavailable
Medieval Age Medieval Age None Unavailable
Gunpowder Age Gunpowder Age None Unavailable
Enlightenment Age Enlightenment Age None Unavaliable
Industrial Age Industrial Age Anti-Aircraft Gun Anti-Aircraft
Modern Age Modern Age Anti-Aircraft Battery Anti-Aircraft
Information Age Information Age Anti-Aircraft Missile Anti-Aircraft

Anti-Aircraft units are the mobile variant of the stationary Air Defenses, which are an upgrade of the earlier Lookouts and Observation Posts. While the latter ones are more effective in defending cities, outposts and wonders, Anti-Aircraft units are supposed to accompany armies and protect them from enemy air raids. Depending on enemy air power, try to bring at least 3-5 AA units with an attacking army, otherwise you might lose important units such as Generals, Supply Wagons and Artillery Weapons to enemy air raids.

Special Forces and Elite Special Forces scout units have the ability to automatically jam the weapons of nearby Anti-Aircraft units.

The British build Anti-Aircraft units and buildings 25% cheaper and 33% faster.