Great Eagle

All flyers have the Swiftstride special rule.
Movement begins and ends on the ground and moves up to 10".
Only entire units that can both walk and fly can do both.
A flying charge is calculated with a movement of 10".
Units can perform a Flying March of up to 20".
Flyers always move on the ground when they flee or pursue, but still benefit from Swiftstride.

Flying Cavalry are treated as Fast Cavalry with the Fly special rule.

Always Strikes Last special rule
Inflicts automatic hit at model's Strength on one enemy infantry, war beasts, or swarm in base combat

When charging uses 3D6 and discard the lowest result and add to their move value.
When fleeing and pursuing, use 3D6 and discard the lowest result.