Advanced Flying Unit的用法和样例：
- They can't be outranged by Hammer Tanks with Leech-Beam or attack any flying unit.
- Giga Fortress - A flying unit that is able transform into a fortress on build able land with a set of weapons mounted on it.
- Strong and flying units are good at besieging and defending castles.
- Dragon Hawk - Swift flying unit, mounted by an Elven warrior. Has the Cloud ability. Attacks land and air units.