Jack Campbell (John G. Hemry) is the author of the New York Times best-selling Lost Fleet series and Lost Stars series, as well as the Stark's War and Sinclair / "JAG in space" series, and the stand-alone alternate American Civil War novella The Last Full Measure. His most recent books are Lost Stars - Perilous Shield, and Beyond The Frontier - Steadfast in the Lost Fleet series. This fall, Audible is planning to begin bringing out as original audiobooks John's "steampunk with dragons" series, the first book of which is The Dragons of Dorcastle.

John's works have been published in eleven languages. His short fiction includes a wide variety of works covering time travel, alternate history, space opera, military SF, fantasy, and humor. His most-recently published short story is The War of the Worlds, Book One, Chapter Eighteen, The Sergeant Major (a previously unknown lost chapter to the classic novel). John has also written a fair amount of non-fiction, including articles on real declassified Cold War plans for US military bases on the Moon, and Liberating the Future: Women in the Early Legion (of Superheroes) in Sequart's Teenagers From the Future. At somewhat erratic intervals he presents his talk on Everything I Needed To Know About Quantum Physics I Learned From The Three Stooges, showing how Stooge skits illustrate principles of quantum physics as well as the occasional Newtonian law of motion or relativistic concept.

John is a retired US Navy officer, who served in a wide variety of jobs including surface warfare (the ship drivers of the Navy), amphibious warfare, anti-terrorism, intelligence, and some other things that he's not supposed to talk about. Being a sailor, he has been known to tell stories about "Events Which He Says Really Happened" (but which cannot be verified by any independent sources). This experience has served him well in writing fiction.

He lives in Maryland with his indomitable wife "S" and three great kids (all three on the autism spectrum).