Charles Jean Jacques Joseph Ardant Du PicqRoger J. Spiller is the George C. Marshall Distinguished Professor Emeritus of Military History and former director of the Combat Studies Institute at the US Army Command and General Staff College. He is the author of An Instinct for War: Scenes fom the Battlefields of History. He has also served as an advisor to Ken Burns on documentary television series on World War II and the Vietnam War. Read More Read Less