The following are the common flying units added by the Republic of Poland, the Saxon Empire, the Ovié and the Ussonia Alliance in the DLC "Operation Flying Eagle".
1> transport aircraft
The helicopter could carry a transport compartment flanked by balloons, produced by a high-class workshop; it could transport a squad of infantry, acting similarly to the PZM-16 "Zolw" of the Republic of Poland. The aircraft was fast, had weak firepower, and was armed with anti-infantry machine guns, which could deal with sporadic infantry and fortifications; equipped with medium armor, with some defensive power, but easy to shoot down by the PZM-11 "Lowca", preferably escorted by aerial motorcycles.

2> Aerial Motorcycle
The airmobile body is a small airship with 2 rotors on the side, it is a light anti-aircraft unit with 2 light machine guns in front, produced by the barracks. This aircraft is very unstable and can only ride a single person. The aircraft is light armor, has low durability, and is easily shot down by anti-aircraft fire; its weapons are also suitable for infantry, and are ineffective against medium and heavy armor.
The default skin
In multiplayer, it can be used as your early air superiority unit for a low price and has the ability to fly at high speeds to avoid harassment by enemy forces.
Skymobile has three skins: the default skin, the polished brass skin that requires 3200 tokens to unlock, and the Atlantis skin that unlocks after completing DLC Mission 3.
Polished brass skin
Atlantis skin
3> Air Gunboats
The air gunboat system consists of 3 balloons, is a kind of close air support unit, produced by the advanced workshop. Above the hull is an observation deck, below which is mounted a destroyer gun, due to the inability to pitch widely, the range is very close, which makes the boat vulnerable to attack, it is best to let the aircraft attract fire before attacking.
The boat's firepower is large enough to deal massive damage to heavy armor, with range damage, similar to the SLL 33 "Erlkonig", which can also deal with the Air Force. Air gunboats are lowly maneuverable, steer slowly, and have low loading speeds, potentially allowing highly maneuverable targets to escape before attacking. As a unit that appears in the middle and late stages, it consumes a lot of resources to produce it. It is afraid of rockets and heavy machine guns, and it will be vulnerable if it is not escorted.
Air Gunboat has two skins: the default skin and the Copper Spotted Snake skin, which requires 3200 tokens to unlock.
The default skin
Copper-spotted snake skin
Image from the web