The Man Without a Country is the story of American Army lieutenant Philip Nolan, who renounces his country during a trial for treason and is consequently sentenced to spend the rest of his days at sea without so much as a word of news about the United States. Though the story is set in the early 19th century, it is an allegory about the upheaval of the American Civil War and was meant to promote the Union cause.

This story was written in the summer of 1863, as a contribution, however humble, towards the formation of a just and true national sentiment, or sentiment of love to the nation. It was at the time when Mr. Vallandigham had been sent across the border. It was my wish, indeed, that the story might be printed before the autumn elections of that year,—as my "testimony" regarding the principles involved in them,—but circumstances delayed its publication till the December number of the Atlantic appeared.