Portrait of Napoleon (1769-1821) in Uniform Francois Pascal Simon Gerard (1770-1837)

The picture has something of this: people, portrait, armor, man, soldier, military, weapon, sword, war, wear, military uniform, helmet, skirmish, leader, royalty, knight, Gothic.
Perhaps it’s a painting of a man in a military uniform with a red rose in his left hand and his right hand in his other.