Menschen im Feuer (1931)

Harry Peltzer, who is passionate about his job as a firefighter, and his superior, fire chief Paul Körner, are the best of friends. This changes the day they both meet Nelly, a young, blonde cashier at a vending machine buffet, on whom both men immediately set their eyes. As Harry has a much better chance with Nelly, Paul's friendship with him soon turns into bitter antagonism, if not outright enmity.