Siege infantry

Siege Infantry are a sub-group of Siege units that are non-mechanical soldiers designated for Siege warfare. Siege Infantry are a merger of the Infantry and Siege Weapon classes as they deal normal damage, and have natural bonus vs buildings. Siege Infantry in Age of Mytholoy deal Hack Damage, and Crush damage. Petards are not considered Siege Infantry due to their ambigious nature, and lacking many qualities of Infantry.

Age of Mythology
Siege infantry was properly introduced in Age of Mythology: The Titans.
 * Destroyer
 * Fire Lance

Age of Empires III
Siege Infantry was expanded upon, in Age of Empires III.
 * Grenadier
 * Arsonist
 * Abus Gun
 * Miner