Catapults have been one the main siege engines since the days of the ancient Shantiris. While they vary in design (some rely on the sudden release of tension on wooden beams or twisted cords, others are powered by a counterweight), their purpose remains the same: to hurl a large rock at the enemy’s walls.
“The type of catapult currently favoured within the Empire uses a counterweight, but lacks the slingshot characteristic of trebuchets. ...How do I know so much about siege engines? Well let’s just say I took part to a few wars myself...”