The Battle of S. Giorgio di Mantova, 29 Fructidor Antoine Charles Horace Vernet (1758-1836)

The picture has something of this: people, many, lithograph, crowd, group, man, vehicle, skirmish, war, battle, military, army, wear, weapon, outdoors.
Perhaps it’s a painting of a battle with a large group of men on horseback and men on horses on the other side of the river and buildings in the distance.