Berkshire-based Harry Dempsey is a talented profile artist who specialises in fighter aircraft of World War I. He has illustrated all of Osprey's World War I Aircraft of the Aces titles to date. A resident of Leesburg, Virginia, Jon Guttman is senior editor, research director and contributing writer for Primedia Enthusiast Publications. Specialising in World War I aviation, he has written six titles in the past, although this is his first volume for Osprey.