King Gustav III of Sweden & a Soldier.Episode from the Russian War 1789 Pehr Hilleström (1732-1816)

The picture has something of this: cavalry, people, seated, mammal, group, vehicle, many, transportation system, man, weapon, carriage, military, herder, cowman, skirmish, cattle, war, livestock, soldier.
Perhaps it’s a painting of a military scene with men in uniform and horses in the foreground and a man on horseback on the far side of the scene.