Orlovsky AO – Private Life-Guards Cossack Regiment Hermitage ~ part 09

The picture has something of this: cavalry, horse, equestrian, seated, competition, animal, mammal, people, sport, fast, rider, man, race, field, hurry, action energy, track, equine, motion, stallion.
Perhaps it’s a painting of a man riding on the back of a brown horse with a flag on it’s back and a sword in his other hand.