her is a pic of the Russo-Japanese Russian infantry:-

Just be aware that they wear the peakless fourashka(?) cap.
The dismounted British cavalry wear puttees rather than boots but would probably be closer to what you want. Or you could use the WW1 British infantry in peaked cap and greatcoat. Here is a picture of figures painted by the inimitable Nik Harwood:-

Cheers
GrumpyOldMan











