Very nice! Belgian Carabiniers I think. I have them to do. I am 2/3rds of the way through the Union Brigade, based on a Charge! organisation.
2015 seemed a good year to comemorate the battle that got me playing with toy soldiers, and the rule set of preference that I started out with. 50 years ago though it was Featherstone War's Games on semi permanent loan from the library nad converted airfix.
Graham