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USN (美國海軍 United States NAVY)


The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the eight uniformed services of the United States.

U.S.M.C. (美國海軍陸戰隊 United States Marine Corps)


It is the Marine Corps and Amphibious Combat Forces in the US Army. Its main responsibility is to use the US Navy's fleet (including aviation) to quickly reach the global crisis sites to perform combat missions. The U.S. Marine Corps is an independent service of the U.S. Army, parallel to the U.S. Navy status, and is also part of the U.S. Department of Defense

USAF ( 美國空軍 United States Air Force)

The United States Air Force (USAF) is the aerial warfare service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services.