Zichy, Mihaly – Alexander II and Nasir al-Din Shah during the parade on the Empress meadow Hermitage ~ Part 05

The picture has something of this: people, group, man, cavalry, military, mammal, weapon, skirmish, many, war, army, soldier, wear, battle, group together, gun, warrior, veil, seated.
Perhaps it’s a group of men riding on the backs of white horses in front of a crowd of men in uniforms standing on either side of each other men.