Here's a real treasure
"Fraulein Doktor" 1969, with the lovely Suzy Kendall, Nigel Green (the big Sgt from 'Zulu') and James Booth (Pvt Hook- also from 'Zulu'), and Kenneth Moore as the Head of British Intelligence.
Great film. Plots within plots. A clumsy Romantic scene, just like in real life. Lots of suspense and action. Absolutely surreal battle scene towards the end.
Controversial because of a certain scene, no not the naughty one, but when you see it you'll know it.
There's a U boat in it an' all. Try to buy it though, no luck, unavailable. The only place you can see it is on youtube.
Regrettably half way through the sound goes out of synch and stays that way.