Large battles or small skirmishes? I've been trying to sort out solo gaming battles and have started leaning towards Hail Caesar, using Ady's Shadow Storm add-on fantasy rules. My plan is to give comanders programmed personalities... Cautious, Aggressive, etc. plus tailored scenarios. Combined with the leadership rolls, I'm hoping i can keep one side nearly on autopilot.
I have never read/played any of the Piquet games, but I am very curious now about the fantasy rules, and have heard they are readily adapted for solo play.