Are you considering the U.S. Navy as enlisted or as an officer? Learn about the American Navy and your career opportunities within the U.S. Armed Forces.

The United States Navy (USN) is the maritime service branch of the United States Armed Forces and is designated as the Navy of the United States in the Constitution.

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Dive in and explore the Navy — from its traditions to leadership and structure, to the ships, submarines, aircraft and personnel that deliver a global reach. See how America projects power at sea.

The Navy's primary mission is to defend the United States.

Jan 12, 2026 · The United States Navy (USN) is the branch of the United States armed forces charged with the defense of the country at sea, the seaborne support of the other U.S. military services, and …

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