A mangonel is a type of heavy catapult commonly used by the Imperial Troll Military Forces that hurls heavy projectiles in a high arc using direct manpower pulling the arm from behind rather than torsion or gravity. This payload can hit targets behind cover, and the mangonel typically hurls a heavy stone, although it can hurl other kinds of projectiles, with different effects.

Mangonel
Weapon
Abilities
Unorganised
Ammunition - Weapon
You can use a weapon that has the ammunition property to make a ranged attack only if you have ammunition to fire from the weapon. Each time you attack with the weapon, you expend one piece of ammunition. Drawing the ammunition from a quiver, case, or other container is part of the attack (you need a free hand to load a one-handed weapon). At the end of the battle, you can recover half your expended ammunition by taking a minute to search the battlefield.