United States Navy (USN)

The United States Navy (USN) is the naval warfare branch of the U.S. Armed Forces, responsible for protecting the nation's interests at sea. Established in 1775, it operates ships, submarines, and aircraft to ensure maritime security, support military operations, and provide humanitarian assistance. The Navy maintains a global presence through its fleets and bases, engaging in training, readiness, and partnerships with other countries. Its core missions include sea control, power projection, and deterrence against threats. The Navy also plays a critical role in crisis response and disaster relief efforts around the world.