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Science | Military | Branches

Learn about the various branches of the U.S. Military. Find out how they were formed, their role in the nation's defense, and what it's like to be a soldier in one of these branches.

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How is the National Guard different from the regular Army?

The National Guard serves many purposes and does many jobs for the United States. Learn what the National Guard is and how it differs from the Army and the Air Force.


How the U.S. Coast Guard Works

How the U.S. Coast Guard Works

Unique among the U.S. armed forces, the Coast Guard is perpetually on active duty, entrusted with lots responsibilities and chronically underfunded. Learn about the U.S. Coast Guard. See more »

How the U.S. Army Works

How the U.S. Army Works

The U.S. Army is one of the three main branches of the U.S. military and is primarily concerned with fighting on the ground. Learn all about the U.S. Army from sign up to discharge. See more »

How the Navy SEALs Work

How the Navy SEALs Work

Navy SEALs complete some of the most dangerous U.S. military missions. Learn about how the Navy SEALs work and what it takes to become a SEAL. See more »