I love the military of the United States.  There are currently five branches: the Army, Marine Corps, Navy, Air Force, and Coast Guard.  President Trump just announce a new branch called the Space Force yesterday.
I heard about that! Do you think the Space Force will fight aliens? Or attack countries in space?
LOL.  My guess would be a space fight against other countries.  The President is the commander-in-chief of all our armed forces.  And the Department of Defense really impliments his plans.