Too many (little things) The SS at that time did not wear black uniforms, at the outbreak of the war they changed to grey.
The two RAF pilots saluted the Officer bare headed, headgear must we worn when saluting.
The RAF Officer did not have rank epaulets on his Greatcoat.....at this point I gave up and stopped watching.
If so many mistakes we made in the opening 10 mins (little) how many more would I have to endure.
I would presume others who viewed the whole film and gave a negative response must be to a great degree closer to a valid review