American Edward Everett Hale (1822 - 1909) was a Unitarian minister, an historian and an author. He wrote a number of short stories, but one stands out for it's historical significance The Man Without a Country" (first published in the December issue of Atlantic Monthly in 1863).
The story is a pro-union treatise. In the story an young soldier, American Army lieutenant Philip Nolan, frustrated at a trial shouts, "I wish I may never hear of the United States again!". The judge then sentences him to live a life of exile on the high seas aboard U.S. Navy Warships. As part of the sentence, he is to receive no news of his country, and all that come in contact with him are forbidden to mention the United States. As the story progresses, Hale portrays Nolan as one who, once deprived of his country, learns to love it like no other.
The story was quite effective, as a boost to the Union cause.