The example that I know, Erskine Childers Riddle of the Sands (1903), doesn't hark back to any previous enemy but portrays Germany as a new enemy

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"Tell me you didn't read the book before designing the cover without saying that you've not read even a synopsis"

Cover of an edition of The Riddle of the Sands by Erskine Childers which suggests that the artist & publisher apparently both believe the North Sea is in the middle of the Sahara Desert

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