What I am still missing since I've got the Airfix "Battle of Waterloo set" in 1978 is the carriage that took Napoleon Bonaparte over most of Europe during those days.
That would really be an interesting challenge for Zvezda, Italeri, HäT or even Airfix.
https://www.napoleon.org/en/history-of-the-two-empires/articles/napoleons-military-carriage/
Best Regards
/André