As a senior officer, General Scowcroft was assigned to Headquarters U.S. Air Force in the office of the Deputy Chief of Staff, Plans and Operations, and served in the Long Range Planning Division, Directorate of Doctrine, Concepts and Objectives from 1964 to 1966. He next attended the National War College at Fort McNair, followed by assignment in July 1968 to the Office of the Assistant Secretary of Defense for International Security Affairs. In September 1969, he was reassigned to Headquarters U.S. Air Force in the Directorate of Plans as Deputy Assistant for National Security Council Matters. In March 1970 he joined the Joint Chiefs of Staff organization and became the Special Assistant to the Director of the Joint Staff.