Jean Baptiste Edouard Detaille – Surprise near a bridge. Episode of the Siege of Paris, 1870-1871 Château de Versailles

The picture has something of this: people, group, military, weapon, soldier, man, cavalry, army, war, many, skirmish, gun, rifle, military uniform, battle, uniform, vehicle, group together, crowd.
Perhaps it’s a painting of a group of men riding horses next to a body of water with a crowd of people standing on the other side of the water.