MPAA Rating: PG-13/ Genre: War/ Stars: Fionn Whitehead, Tom Glynn-Carney, Jack Lowden, Harry Styles, Aneurin Barnard, James D’Arcy, Barry Keoghan, Kenneth Branagh, Cillian Murphy, Mark Rylance, Tom Hardy/ Runtime: 106 minutes I wouldn’t have thought you could make a grand-scale war film with minimal ingredients at play, but that was…