Hail Caesar! We Who Are About To Die Salute You Jean-Léon Gérôme (1824-1904)

The picture has something of this: people, group, many, man, architecture, camel, building, cavalry, seated, transportation system, mammal, vehicle, landscape.
Perhaps it’s a painting of a roman gladia scene with a crowd of people in the foreground and a roman soldier on the far side of the scene.