United States Department of Defense United States Department of Defense The Department of Defense (DoD, USDOD, or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States Armed Forces. The department is the largest employer in the world, with nearly 1.3 million active duty servicemen and women as of 2016. Adding to its employees are over 826,000 National Guardsmen and Reservists from the four services, and over 742,000 civilians bringing the total to over 2.8 million employees. Headquartered at the Pentagon in Arlington, Virginia,
Arlington County, Virginia Business Administration (Executive/Global Executive). Other private and technical schools maintain a campus in Arlington, including the Institute for the Psychological Sciences, the John Leland Center for Theological Studies, the University of Management and Technology, The Art Institute of Washington, DeVry University. Strayer University has a campus in Arlington as well as its corporate headquarters. In addition, Argosy University, Banner College, Everest College, George Washington University, Georgetown University, Northern Virginia Community College, Troy University, the University of New Haven, the University of Oklahoma, and Westwood College all have campuses in Arlington. Notable individuals who were born in and/or have lived in