The department of safety (defense department, USDOD, DOD, DoD or the Pentagon) is the executive division of the government of the united states of the usa charged with coordinating and supervising all agencies and functions of the federal government involved directly with national security and the U.S. armed forces. The department can be the largest business enterprise in the world, with greater than 2.thirteen million active responsibility squaddies, sailors, marines, airmen, and civilian workers, and over 1.1 million national Guardsmen and participants of the army, Navy, Air drive, and Marine Reserves. The grand complete is just over three.2 million servicemen, servicewomen, and civilians.
The division – headed with the aid of the Secretary of protection – has three subordinate military departments: the U.S. division of the army, the U.S. department of the Navy, and the U.S. division of the Air power. as well as, four national intelligence products and services are subordinate to DOD – the safety Intelligence agency (DIA), the national security agency (NSA), the national Geospatial-Intelligence agency (NGA), and the national Reconnaissance place of work (NRO). other safeguard businesses embrace security evolved research tasks company (DARPA), the safeguard Logistics agency (DLA), the Missile protection agency, and the Pentagon force protection agency (PFPA), all of which can be beneath the command of the Secretary of security. DoD also operates a couple of joint products and services faculties, together with the nationwide security university (NDU) and the nationwide war school (NWC).