A trebuchet is a medieval siege weapon made of wood with a long arm that, when released, catapults a projectile — in this case, a fireball — at its target.

The trebuchet was the most feared siege weapon of the Middle Ages, capable of hurling massive stones to destroy castles. Here’s how it worked!

Photos and video uploaded to social media show reservists with the Israel Defense Forces operating a trebuchet, a catapult-type tool used in the Middle Ages, throwing fireballs over the concrete ...