"In addition to his writing, Stephenson spent more than twenty-five years as a professional book editor, for much of that time with a particular focus on military publishing.""Stephenson is the former editor of the Military Book Club and the editor of National Geographic's Battlegrounds: Geography and the History of Warfare. He is also the author of Patriot Battles: How the War of Independence Was Fought. He lives in New York City."(source)(source)