In the foreground is a bow powered catapult , or stone thrower , a cross between a giant crossbow and roman mangonel.

To right is a hybrid trebuchet , a combination of the traction trebuchet and counterweight trebuchet. A traction trebuchet uses men, pulling on ropes attached to ... >> more

In the foreground is a horseman knocked from his mount by a large stone missile, purportedly from a trebuchet atop the castle wall.

To the right is a bow powered catapult.

To the left  is a hinged counterweight trebuchet The view shows the block and tackle for gaining  mechanical advantage when drawing the beam into the... >> more

Scene showing a torsion powered arrow shooting catapult crewed by roman soldiers and sheltered under a protective shed. This catapult , powered by a twisted skein of rope, or horse hair, is a  >> more
 

Photograph of French troopers using a spring, or compound spring powered catapult to hurl grenades across no man's land and into enemy trenches.

Scene depicting refugees in a defensive trench during a medieval winter siege. In the background are hinged counterweight trebuchets atop >> more

Unlike the counterweight  trebuchet , the traction trebuchet uses men, the traction crew, pulling on ropes attached to the short end of the trebuchet beam, as motive force. Lacking in range and projectile capacity, as compared to the larger >> more