Claude Gautherot – Napoleon Dismounting with an injured Foot at Regensburg, aided by the Surgeon, Yvan, April 23, 1809 Château de Versailles

The picture has something of this: people, group, cavalry, many, music, man, skirmish, smoke, sword, weapon, military, festival, soldier, wear, war, woman, armor.
Perhaps it’s a painting of a group of men and women dressed in military garb standing in front.