Not sure of the brand, but they had a Minifigs feel about them. On the base of the infantry figure is the code 30F while the flagbearer has the code 25F which the drummer also seems to have (maybe reflecting a command set?). The Napoleonic 15mm Wargamer | Facebook consensus was Minifigs.
I rebuilt one flagpole and was going to replace some broken bayonets but thought better of it. They look good as they are.
I was particularly taken with the drummer trudging along.
My camera really brightens the blues.
UPDATE
Thanks to James we have the definitive reference for these figures.






















































