Emperor Napoleon I and his staff on horseback Horace Vernet (1789-1863)

The picture has something of this: cavalry, seated, cowman, people, man, mammal, rider, lasso, competition, horse, rodeo, transportation system, lid, recreation, cowboy, saddle, group, herder, motion, cowgirl.
Perhaps it’s a painting of a group of men riding on the backs of horses in front.