Is this a real person?
This painting depicts Francis Stuart as Athena, daughter of Zeus. Stuart was a prominent 17th century British woman known for her beauty and involvement in palace intrigue.
The artist of this piece, Jacob Huysmans was a 17th century painter born in Antwerp who worked for the court of British King Charles II.
He painted portraits of British royalty in the grand Baroque tradition. His female portraits often portrayed the sitter in the guise of mythological heroines or allegorical beauties, like you see here.
Is this person a soldier?
I can see why you might think that, but this painting depicts Frances Stuart, the Duchess of Richmond. She is shown dressed as Athena, the ancient Greek goddess including Athena's shield and helmet.
Who is the face on the bottom right?
The face on the shield is the serpent-haired head of Medusa! In this portrait, the artist has portrayed the sitter in the guise of of a Greek goddess, Athena, who was the goddess of military victory, among other things. She is believed to have carried this shield bearing the terrifying head of Medusa.
Thank you