In the on-screen opening prologue, the word BLITZKRIEG is misspelled as BLITZKREIG.
The secret list containing the names of Nazi collaborators that Mike Morrison was expected to pass in person to Lord Victor of British Intelligence in London could have instead been transmitted in code via clandestine radio operated either by an undercover Allied agent or Greek partisan so equipped. To place Morrison and those assisting him in such unnecessary jeopardy would have been considered amateurish or desperate at best.