@freemo Wouldn't siege weapons, like ballistas and catapults and siege towers, which are mobile heavy weapons platforms designed to protect their operators, be the medieval equivalent of tanks?

@LouisIngenthron @freemo Siege engines were artillery. They were replaced by bombards, large caliber artillery, when gunpowder was available in quantity.

A fair number of Civil War reenactors own cannons, those are legal too.