Small/slim to none shot in the dark...but is there anyone here who playes either of these games? Both offer a reasonably competent AI opponent....but I'd very much love to play either of these against an actual person.
HOI III is a failry niche WWII grand strategy game that still has a very active MOD community even though the game is old. The mods make it great and playable still if you like that genre.
Sid Meiers Gettysburg has stood up well over a VERY LONG time...and has a reasonable competent AI, but not a completely rational one. I'd really love to play another human.