Mangonel

A key siege weapon for warfare, the Mangonel was used as early as Ancient Greece, but is definitely known for tearing down castle walls during the Middle Ages. This gigantic projectile weapon can hurl almost anything that can fit in its bowl-shaped hand, including large rocks, diseased corpses, or arrows. Catapults were so effective as siege weapons that even in World War I French Forces used modern-sized catapults to fling grenades at enemies in trench warfare.