Unusual but unsatisfying John Wayne vehicle, with The Duke ill-at-ease as a wartime American falling in love with the daughter of a Viennese surgeon.

Like most Republic vehicles of the time, this odd mixture of Nazis and frontier pioneers has a cheap look, in spite of the efforts of Bernard Vorhaus, a German director who made numerous films in Britain before going to Hollywood where his career was ended in the early Fifties by the communist witch-hunts.