Army The U.S. Department of Defense notes that the Army is the largest and oldest service in the country's military. The Army provides the ground forces that protect the United States. Members of the Army are trained to defeat enemy ground forces and to seize and control enemy lands and resources. Army also are trained to control and interact with the general population in countries where members are stationed. Marine Corps It might surprise some to learn that the Marine Corps, is a component of the Department of the Navy. That's one reason why maintains amphibious and ground units for contingency and combat operations. The Marine Corps, is divided into four groups: the operating forces that fight; the headquarters for leadership; the supporting establishment that provides logistical support; and the Marine Corps. Reserve. Navy The Navy protects America at sea. Despite its massive land mass, the United States is a maritime nation, which underscores how important a strong Navy is to the safety of the country and its residents. The Navy works alongside American allies and partners to keep the seas open and free. Air Force The Air Force has five core missions: air superiority; global strike; rapid global mobility; intelligence, surveillance and reconnaissance; and command and control. The Air Force defends the country and its residents in air, space and cyberspace and is capable of delivering forces anywhere in the world within hours. National Guard The National Guard is comprised of the Army National Guard and the Air National Guard. The National Guard has a diverse array of responsibilities that range from supporting combat missions to responding during domestic emergencies to assisting in humanitarian efforts and more.
