Dwight Jon Zimmerman is an award-winning author of books and articles on military history and a member of the Military Writers Society of America. He lives in Brooklyn, New York.
John D. Gresham is a veteran military analyst and the coauthor, with Tom Clancy, of Clancy's bestselling nonfiction series. He lives in Fairfax, Virginia.
DWIGHT JON ZIMMERMAN has written extensively on military-history subjects for American Heritage, the Naval Institute Press, Vietnam Magazine, and numerous military-themed publications. His books include The Hammer and the Anvil and The Vietnam War: A Graphic History. He lives in Brooklyn, New York.
JOHN D. GRESHAM is a veteran military analyst and co-author with Tom Clancy on his bestselling series of nonfiction "guided tour" books about military units, including Special Forces and Marines. He lives in Virginia.