Napoleon and His General Staff Jean-Léon Gérôme (1824-1904)

The picture has something of this: people, group, veil, man, wear, weapon, cavalry, skirmish, military, mammal, battle, seated, lid, war, many, woman, soldier, army.
Perhaps it’s a painting of a man leading a group of men on camels in a desert with a man standing on the back of one of the camel.