Wounded. 1901 Vasily Vereshchagin (1842-1904)

The picture has something of this: cavalry, people, seated, man, weapon, cowboy, smoke, mammal, wear, veil, lid, cowman, war, soldier, equestrian, two.
Perhaps it’s a painting of a man riding on the back of a horse next to another man on the other side of the horse with a gun in his hand.