US President Donald Trump signed a directive on Tuesday that orders the Department of Defense to create a Space Force as a sixth military branch.
Currently, the US Air Force manages the space domain through the US Space Command. This proposed Space Force would stand alongside the Army, Air Force, Navy and Marine Corps. However, the newest branch is expected to be akin to the structure of the Marine Corps, which is a component of the US Department of the Navy but has separate representation on the Joint Chiefs.
The directive, known as Space Policy Directive 4 (SPD-4), orders the Pentagon draft legislation for Congress that would create the Space Force as a part of the U.S. Air Force. This would establish the first military branch in 72 years. The Air Force is the nation's youngest branch and was added shortly after World War II.