The U.S. military defense system is composed of six main branches: the Army, Navy, Air Force, Marine Corps, Space Force, and Coast Guard, each with distinct roles.
These branches are supported by 11 unified combatant commands (CCMDs), each overseeing specific geographic or functional areas of military operations to ensure coordinated defense and response efforts worldwid
Army The largest and oldest service in the U.S. military, the Army provides the ground forces that protect the United States.
A component of the Department of the Navy, the Marine Corps maintains amphibious and ground units for contingency and combat operations.
On, above and below the water, the Navy is America’s forward-deployed force and is a major deterrent to aggression around the world.
The Air Force provides a rapid, flexible, and lethal air and space capability that can deliver forces anywhere in the world within hours.
The Coast Guard provides law and maritime safety enforcement, marine and environmental protection and military naval support. Part of the Department of Homeland Security during peacetime,
Composed of the Army National Guard and Air National Guard, the National Guard is a versatile force, supporting combat missions, domestic emergencies, humanitarian efforts, homeland security operations and
The U.S. military plays a crucial role in national security, protecting the country from external threats and supporting peace and stability worldwide. The Department of Defense (DoD), which includes the Army, Navy, Air Force, Marine Corps, Space Force, and Coast Guard, ensures this defense through various strategic functions:
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