KarlXI's life horse — The Little Englishman David Klöcker Ehrenstråhl (1629-1698)

The picture has something of this: cavalry, horse, mammal, seated, two, mare, mustang, equine, equestrian, stallion, action energy, racehorse, livestock, side view, steed, motion, mane, animal.
Perhaps it’s a painting of a black and white horse galloping in a field with a brown sky in the background and a brown.