Wartime Nicolaes (Claes Pietersz.) Berchem (1620-1683)

The picture has something of this: people, group, cavalry, many, mammal, seated, vehicle, man, transportation system, cattle, military, herder, skirmish, war, woman, recreation, livestock.
Perhaps it’s a painting of a man riding on the back of a white horse next to a group of people on a field with a castle in the background.