Fly (X)

Units composed entirely of models with this special rule can make Flying Movements when performing a Move Chargers move or in the Remaining Moves subphase.
When a unit makes a Flying Movement, substitute the models’ Movement Characteristic with the value given in brackets (X). All modifiers to ground movement values are also applied to the flying value of a model. Flying Movement can be used to March. Units using Flying Movement ignore all Terrain and units during the Flying Movement (from their starting to their ending position), but must abide the Unit Spacing rule at the end of the move (unless charging, when the normal exceptions to the Unit Spacing rule apply). They are still affected by the effects of the Terrain from which they take off and in which they land. Models with the Fly special rule also always have Swiftstride and Light Troops.