It is not a documentary. or a docu-drama. it is only a decent artistic movie. using well known pieces - from the love story to the conscience of a simple/vulnerable man against a huge system. and , maybe, what you admire about it is the wise balance between what you consider speculations or conspiracy teories and the real events. because the atmosphere is real, and the questions and the desire of war. the only sin - maybe the references to problems familiar for WWII period. but that is not a big mistake. without be great, it is a correct film. with good performances, nice plot and noble message. and that represents more than a virtue.