War films are not always showing the war per se - often the main theme is the influence of the conflict on lives of people involved, but also their families and friends. War is seldom a local thing - the trauma, the pain, the death they put their mark on people from around the world.
During Cold War recently reactivated German Air Force needed new interceptors and Lockheed F-104 Starfighter seemed perfect. Soon after entering the service F-104 was nicknamed Widowmaker by the pilots, and not for being a deadly weapon.
Four young cadets decide to switch from merchant navy to U-Boats after their ship is sunk by British airplanes.