L. Douglas Keeney has a master's degree from the University of Southern California and is a military historian and researcher. He is the cofounder of The Military Channel, on which he hosted the series Gun Camera. He has also appeared on The Discovery Channel, The Learning Channel, CBS, and Fox in the Morning. The author or coauthor of 12 books on military history, Mr. Keeney is a pilot and scuba diver and has visited many of the World War II sites mentioned in this book. He lives in Louisville, Kentucky.