The Office of the Secretary of Defense (OSD) is responsible for policy development, planning, resource management and program evaluation. OSD includes the offices of top civilian defense decision-makers with regard to personnel, weapons acquisition, research, intelligence and fiscal policy, as well as offices the Secretary establishes to assist in carrying out assigned responsibilities.
The U.S. Secretary of Defense oversees the Department of Defense and acts as the principal defense policy maker and adviser.
Dr. Mark T. Esper
Secretary of Defense
The Deputy Secretary of Defense is in charge of the Defense Department’s day-to-day business. The primary responsibility is managing the defense budget and executing the Defense Secretary’s priorities.
David L. Norquist
Deputy Secretary of Defense
See how other leaders accomplish the DOD mission by visiting the websites below.