Nope and nope! In fact the town of San Patricio, populated by guess who, was fairly heavily recruited - still inside of Mexico!, and though it provided other armies with manpower it served it's own first. These Irish were not that excited by the prospect of being bullied yet again by a bunch of bible thumping perverts like they had back in the old country, simply they did not want into the USA.

So correctly, Taylor butchered some of the Particios as a warning to the rest of the Irish catholics in that region. The stated reason 'desertion' was and is bs since these men were not US citizens, they were Mexican!