Kazimierz Witkiewicz

as Francesco Rovanelli

as Poet (uncredited)

as Felicjan Dulski

as Journalist

as MO commander

as Professor Piotr Górski

as Jan Kostrzewski

as Captain

as pułkownik Wacław Biernacki-Kostek, komendant twierdzy brzeskiej

as Car Plant Director

as Solfernus

as generał Władysław Sikorski