The general way that Gordon L. Rottman writes for Osprey Publishing isn't through the official records as a normal military historian (as the time he went to the U.S. Marine Corps Historical Reference Center located at Marine Corps Base Quantico, Virginia to investigate records for his U.S. Marine Corps World War II Order Of Battle and World War II Pacific Island Guide which were both published by Greenwood) but via Internet communication with websites featuring veteran reminisces and unit histories. He finds Vietnam veterans with photographs on the Internet and then uses their recollections for some of his Osprey titles. He repeats much of what is stated without factual cross-checking in archival records. This amateurish approach produces a glut of books to satisfy modeler, amateur historians, and re-enactor cravings, but are of less value in academically-rigorous studies of the Vietnam War.