Finished these today Fijo de la Habana Spanish colonial battalion circa 1760ish. Using Spencer Smiths.
Flags from David at "Not by Appointment" converted by painting in fleur de lys infills in each corner.
That's another different uniform and flag combo, mate. With a different command stand they could be passed off as Swedes, too. Just ignore the blue trousers.
If "The System" is the answer, who asked such a bloody stupid question?
Finished Fijo de la Habana Spanish colonial 2nd battalion to go with David's flags.
I have used Spencer Smiths earlier Napoleonic figures with most of the backpacks trimmed to make them more 18th century looking.