Mark Moyar is the author of numerous books and articles on national security and capacity building, including Triumph Forsaken: The Vietnam War, 1954–1965 and A Question of Command: Counterinsurgency from the Civil War to Iraq. He has been a professor at the US Marine Corps University, where he held the Kim T. Adamson Chair of Insurgency and Terrorism, and, most recently, at the Joint Special Operations University. A frequent visitor to foreign conflict zones, he has served as a consultant to the senior leadership of several US military commands.