Louis Francois Lejeune – Napoleon’s bivouac on the eve of Austerlitz, 1 December 1805 Château de Versailles

The picture has something of this: group, people, many, cavalry, mammal, cattle, crowd, livestock, vehicle, herder, skirmish, flame, seated, man, outdoors, smoke, goat, daylight.
Perhaps it’s a painting of a large group of people in a field with a lot of horses and people on the other side of the field.