Despite the old counters, La Bataille d'Albuera has the potential to serve as a good introduction to the La Bataille series.

Here's the full video of my recent playthrough:

There are only a small number of specific rules, and they're easy to implement. It's also a relatively easy battle to manage, consisting of just the one-map, but having plenty of battalions to keep both sides occupied. There are also a few 'what-ifs' that players can explore, giving both sides a sense of control and agency [rather than just feeling they're replaying past events].