Dunkirk is an immersive, visceral experience – a film that eschews traditional “war movie” tropes in favour of a you-are-there look at what it really would have been like to be huddled on the beach or holed up in the hull of a freighter as German troops close in during Britain’s most desperate hours of World War Two. When watching it, you think this must be what it was really like.

But was it? Tim Benbow, a naval historian from Kings College, London, shares his thoughts about what Christopher Nolan’s epic got right – and what it got wrong. Click the “play” button above to start the video.

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