Jack Campbell

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 six 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.