Navy, a nation's armed forces that operate on water. A navy consists not only of combat vessels, but also of aircraft and everything necessary to supply the fighting craft and maintain them in operation.
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. See more »
John F. Kennedy called the green beret "a symbol of excellence, a badge of courage, a mark of distinction in the fight for freedom" -- a nod to the most formidable arm of the U.S. military. The Green Berets, or Special Forces, are America's first line of defense around the world. See more »
For most of us, “Special Ops” is what we see in the movies: soldiers trained to kill using their thumb; Charlie Sheen carrying a semi-automatic. But Special Operations are for real, and the U.S. Navy version -- the SEALs -- completes some of the most dangerous military missions. Learn about this elite fighting force. See more »
The U.S. Air Force is the youngest American military branch, forming in the 20th century after the invention of the airplane. Tasked with protecting the nation's skies and supporting ground troops, the Air Force relies on the most technologically advanced military aircraft in the world. See more »