[HoneyBadger]

catapult, torsion-catapult, ballista, mangonel, trebuchet, scorpion, the list goes on! Infact, you can have two lists, A: battlefield artillery, and B: seige artillery.

Then you can start adding flamethrower weapons, anti-personnel shot (diseased cows, grape-shot, exploding ceramic greek-fire grenades, etc.), and various defensive works.

I've written some fun little articles on the idea-so far nobody seems interested, and nothing's come from them, but it would be nice to see them appear.