Many fighters and aircraft, mainly helijets
The Valkyrie-class dropship was a large ship used by the Imperial Celestial Navy. It was used for planetary attack, flying into a planet's atomosphere and disgorging it's complement. It was next to useless in space combat, but excellent at attacking planets.
These dropships are also used for airborne operations with the Imperial Drakonian Marines. Infantry and vehicles are loaded into helijets and dropped from the Valkyries at the target area. This is known as the "Air Cavalry", the soldiers are usually referred to as "Airborne Infantry".