>>1532966 (OP)Yes the guy with the raised arm on a horse
this site seems to say so
https://www.imnk.pl/gallerybox.php?dir=SU305&=&lang=EN
>Kosciusko is wearing an American uniform instead of poor homespun clothes as was customary in the artistic tradition of the time
This matches the man on horseback and also makes a lot of sense, since Kosciuszko fought in the American Revolution
also he's wearing the same thing here
https://en.wikipedia.org/wiki/Ko%C5%9Bciuszko%27s_proclamation