Thanks.
As with any of the scenarios in the book the important thing is to get a game in and having fun, especially right now.
You could use WSS, WAS, SYW, AWI or even Napoleonic figs for a similar game or campaign and likewise for the Maroons, Trent, Perry and Foundry produce suitable figs.
You'll find all you need about the real campaign in the book and there's a list of manufacturers too.
Crann Tara have the Book and I have some stock myself too.