Hey Gerry
Mod conflicts are the most common causes of crashes. Since you're playing the 'True Ground' series with B&F, try disabling all other mods but the 'True Ground' mods along with B&F. Prioritize them in Modifications like this:
Bugles & Flags XIX
True Ground Maps - Gettysburg - The Big Picture
True Ground SR1
True Ground SR1 II
You're the first posting regarding Win 11, guess that makes you the first official tester. Given that, does the game run with no mods opted? Please keep us updated as to your progress or lack of...
Thanks in advance
RB