United States Secretary of Defense to die was Frank Carlucci (1987–1989), on 3 June 2018. United States Secretary of Defense The Secretary of Defense (SecDef) is the leader and chief executive officer of the United States Department of Defense, the executive department of the Armed Forces of the United States. The Secretary of Defense's position of command and authority over the United States' military is second only to that of the President and Congress, respectively. This position corresponds to what is generally known as a Defense Minister in many other countries. The Secretary of Defense is appointed by the President with the advice and consent
Assistant Secretary of Defense for Sustainment Johnson, Nixon and Ford administrations, oversight of logistics and materiel readiness was merged with oversight of installations and properties. In 1977, the acquisition functions of this office were transferred to the Director of Defense Research and Engineering, and responsibilities for logistics were merged with manpower and reserve affairs throughout the Carter and early Reagan administrations. For a year in the middle of the Reagan administration, responsibilities for logistics and materiel support were split between two ASDs after the creation of a new Assistant Secretary of Defense for Development and Support, established by Defense Directive 5129.4 (signed 25 November 1984). However,