David McCallum's film debut.
First feature of Paul Stassino.
First full length English language feature film of George Pravda.
The General was never identified by his first name in the film. In the credits he is referred to as Maj. Gen. Kreipe. In real life he was Majorgeneral Heinrich Kreipe. Calling him Karl, as many sources do, seems to have been an invention of the Rank publicity department.
The lines of poetry that Patrick Fermor recites prior to the kidnapping are from 'Childe Harold's Pilgrimage' (Canto III, Stanza 22) by Lord Byron.