I made an image search for medieval war wagon for reference, @BayushiGemma I hope this is the sort of thing you were thinking of, and I hope it came out okay, I don't have very much experience making wagons, I have made a lot more medieval structures over the years.
Made using pieces from Assassin's Creed Gunboat and Chariot Chase.
Made using pieces from Assassin's Creed Gunboat and Chariot Chase.