Charles Philippe Auguste Larivière – Jean-Baptiste-Donatien de Vimeur, comte de Rochambeau, Maréchal of France, Commander-in-chief of the Armée du Nord in 1792 Château de Versailles

The picture has something of this: people, man, armor, wear, sword, portrait, monarch, veil, weapon, costume, lid, helmet.
Perhaps it’s a painting of a man in a red and gold outfit with his hand on his hip and his right.