The Catapult Camp is a Early Middle Ages Military Building. It is where a player can train Catapults, the heavy unit of the age. It is the last unlocked military building of the age. In order to construct a Catapult Camp, a player needs to have unlocked the Physics technology.
It is not recommended to build the Catapult Camp, as the Catapult is somewhat weak against the improved defense of the ranged unit of the age, the Mounted Archer, and also due to the fact that the Mounted Archer can reach the Catapult on the first turn if terrain is unfavorable. However, Catapults might still have to be used to attack Armored Infantry,
For more information about the military unit, visit the Catapult page.