David T. Zabecki Major General U.S. Army (Ret.) enlisted in the Army during 1966 and served in Vietnam as an infantry rifleman. After receiving his commission he went on to command at six different levels. He also served as an Operations Officer, an Intelligence Officer, and a Chief of Staff. In 2003 he was selected to be the Senior Security Adviser on the U.S. Coordinating and Monitoring Mission in Israel, charged with advancing the Roadmap to Peace in the Middle East. General Zabecki holds a PhD in Military Science from Britain's Royal Military College of Science. He is author of several books on military history, including the Naval Institute Press' Chief of Staff: The Principal Staff Officers behind History's Great Commanders.