United States Department of Defense (DoD)

United States Department of Defense (DoD) is the largest employer in the world, with over 2.8 million personnel, including active-duty military, reservists, and civilian staff. As the federal agency overseeing national security and military operations, the DoD manages the Army, Navy, Air Force, Marine Corps, and Space Force. Headquartered at the Pentagon, it plays a critical role in defense policy, intelligence, and global military strategy. With a vast budget and extensive infrastructure, the DoD ensures U.S. security while driving technological innovation and providing significant employment opportunities across the nation.