Quote Originally Posted by Budwise
Don't quote me
I did

Quote Originally Posted by Budwise
Not only should they make different kinds, you should get more cannons than one.
Getting more than one cannon per unit wouldn't leave much space or time for the attacker to maneuver. Already 2-3 catapults/demi-culverins on defence can cause so much damage to the attacker and, even worse, kill the general, before the fighting has even started. If you got 2-3 pieces of artillery per unit, the bombardment would be crippling.