Battle of Britain (1969)
The classic film, "Battle of Britain", from 1969. This is a vastly intelligent movie, presenting a complex military-political situation with endless nuance - while at the same time being a superlative action movie. And an episodic tragedy. It simply hasn't been done better, not discounting the various "War and Peace" productions. Among other things you see here the outlook of the European postwar, along with it the case for NATO, presented with utter clarity. It is a whole world view distilled in two hours.