[World Building] A Future History of Space Force

[thrash]

Originally Posted by David Johnston2

Since Space Command was spun off into Space Force ...

Apologies for being a bit pedantic, that's not what happened. If anything, USSF was spun off from the US Air Force.

US Space Command (SPACECOM) still exists as a multi-service combatant command under DOD, like EUCOM or SOUTHCOM. It has service component commands from most of the armed forces (NAVSPACECOM, ARSPACE, etc.)

US Space Force (USSF) is a separate uniformed service under the Department of the Air Force, much like US Marine Corps under the Department of the Navy.

Technically, USSF provides forces and capabilities to SPACECOM, which is responsible for executing the DOD mission in space. There are things that USSF does that SPACECOM doesn't, however, and vice versa.