by Anduin
According to the skill:
Leadership: Once a turn: When activating a Unit, add +3 to its Block, or +2 to its Attack, or +1 to its Ranged (not Siege) Attack, regardless of elements.
This means Leadership can not be used with Catapults at all? As Catapults only have Siege Attack and I cannot give the Catapults +X of something they don't have?