The sun doesn't have a scientific name, it is sometimes called Sol. Solis is Latin for sun; Sol is the Roman equivalent of the Greek sun God Helios. The sun does have a symbol, which is a circle with a dot in the center.
"Call of Duty: WWII" is a video game that is based on real historical events and settings, but it is not entirely realistic. While the game aims to depict the World War II era with historical accuracy, it takes creative liberties for the sake of gameplay and storytelling.