It’s very known that a few of Irish volunteers fought for Mexico during the Mexican-American war, the civi has already a card called “Los Colorados” Battalion that sends 9 Soldados and 1 Falconet, my recommendation is replace those 9 soldados and the falconet for 25 Irish Brigadiers with a cost of 2500-3000 coin, adding the mercenaries to the taverns and replacing his skin for the accurate uniform of St. Patrick’s Battalion and maybe a small improve to Mercenary Heavy Infantry like 0.5 points to distance or 5% of attack or resistance.
And the original card of 9 Soldados and 1 Falconet replacing the name to “Matamoros” Battalion in honour of the main mexican line infantry battalion that fought in The Alamo.