Lt.-General Sir Edward Barnes G.C.B. George Dawe (1781-1829)

The picture has something of this: people, portrait, man, sword, armor, weapon, wear, antique, Renaissance, soldier, retro, war, vintage, skirmish.
Perhaps it’s a painting of a man in a red uniform with a medal on his left shoulder and a star on his right shoulder, with a blue sky in the background.