John G. Hemry

John G. Hemry, is an American author of military science fiction novels. Drawing on his experience as a retired United States Navy officer, he has written the Stark's War and Paul Sinclair series. Under the name Jack Campbell, he has written twenty-one volumes of The Lost Fleet series and the steampunk/fantasy The Pillars of Reality series. He has also written over a dozen short stories, many published in Analog magazine, and a number of non-fiction works.

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