Henri de La Rochejaquelein (1772-94), leader of the revolt in the Vendee Pierre-Narcisse Guerin (1774-1833)

The picture has something of this: people, wear, man, weapon, lid, music, gun, portrait, retro, veil, military, two, war, woman, uniform.
Perhaps it’s a painting of a man in a military uniform holding a flag and pointing a gun at another man with a gun in one hand and a flag in the other hand.