Steve, The Napoleonic Association is a good place to start. I think they are still headquartered there in England. The folks at Smoke and Fire News may be able to help. You can reach them by e-mail editor@smoke-fire.com You can also e-mail the columnist who writes about historical games for them writer2@reliable-net.netSome simple board games have worked well for me. I use nine holes, three men's morris, nine men's morris, and fox and geese. Our local historical society has used badminton and cricket to get the public involved. They have also reenacted local court cases illustrating the evolution of freedom of religion in Virginia. And of course, period music is always fun.
Take care, Timehiker