Watch this movie.
The total budget was likely what was spent just for catering a 'skyscraper' movie I wasted a few hours watching.
I AM an aficionado of WW2, I can spot mistakes. AND?
The story of these brave men is not well known - a pity. There were several groups of pilots from several occupied countries who made it to Britain and fought like lions. The poles, were brave - and nuts. Some of the crazy scenes - are true (not a spoiler).
The effects - yah, not up to Hollywood top CGI, but, enjoy a true story with good acting,