There could also be a new unit called the [Staff Slinger]. This unit could serve as an early ranged siege unit that can be trained from the [Barracks] when reaching the Tool Age.
The staff sling as one can tell from the name consists of a staff that has a short sling at one end. It was used during the Classical Antiquity where the Romans for example called it the “Fustibalus” and the Greeks used it as a component for a siege engine called the “Cheiromanganon” which was some kind of hand trebuchet.
It seems that the staff sling was generally used for heavier projectiles and for siege situations. Volatile projectiles such as incendiaries or fire bombs were also used as ammunition for it as well.
I made a post last year where I suggested that this unit could be added to [Age of Empires 2] as a new siege unit, since the weapon continued to be used well into the Age of Gunpowder as grenade launchers.
