Department of the Navy

The Department of the Navy (DON) is a pivotal component of the United States Department of Defense, encompassing both the U.S. Navy and the U.S. Marine Corps. Established on April 30, 1798, the department's primary mission is to protect the United States by effectively prosecuting war at sea. This includes the seizure or defense of advanced naval bases, supporting forces of all military departments, and maintaining freedom of the seas.

The DON is led by the Secretary of the Navy, a civilian appointed by the President, who oversees all affairs of the department. Assisting the Secretary are the Under Secretary of the Navy, four Assistant Secretaries, and the General Counsel. The highest-ranking military officers within the department are the Chief of Naval Operations and the Commandant of the Marine Corps, who serve as principal military advisors to the Secretary.

U.S. Navy

The U.S. Navy, as part of the DON, is responsible for maritime warfare operations, including sea control, power projection, deterrence, maritime security, and sealift.

The Navy's mission is to protect America at sea, defend freedom, preserve economic prosperity, and keep the seas open and free.

U.S. Marine Corps

The U.S. Marine Corps, also under the DON, is a rapid-response force specializing in amphibious warfare. The Marine Corps is organized to provide a flexible and rapid-response force capable of seizing and defending advanced naval bases. It also conducts land operations essential to prosecuting naval campaigns.

Civilian Workforce

The DON's civilian workforce, often called the "Home Team," plays a crucial role in supporting the Navy and Marine Corps. This workforce includes hundreds of thousands of civilians, contractors, and workers in public shipyards who build, maintain, and repair naval platforms critical to maritime security.

Headquarters and Locations

The Department of the Navy's headquarters is located in Washington, D.C., with significant installations and facilities across the United States and internationally.

Key locations include:

• Washington, D.C. (Headquarters)
• Norfolk Naval Shipyard, Norfolk, VA, USA – the nation’s oldest shipyard, existing more than 30 years prior to the creation of the Navy Department

These installations ensure operational readiness and maintain the global presence of the U.S. Navy and Marine Corps.

Summary

The Department of the Navy is integral to the United States' defense strategy, providing maritime dominance through the Navy and rapid-response capabilities via the Marine Corps.

Its extensive civilian workforce and numerous installations nationwide and abroad support the ongoing mission and effectiveness of the U.S. Navy and Marine Corps globally.