29 August 2019 – present (4 years 6 months)(Second incarnation) The United States Space Command (USSPACECOM or SPACECOM) is a unified combatant command of the United States Department of Defense responsible for military operations in outer space specifically all operations 100 kilometers (62 miles) and greater above mean sea level. U.S. Space Command is responsible for the operational employment of space forces that are provided by the uniformed services of the Department of Defense. Space Command was originally created in September 1985 to provide joint command and control for all military forces in outer space and coordinate with the other combatant commands. SPACECOM was disestablished in 2002 and its responsibilities and forces were merged into United States Strategic Command. It was reestablished on 29 August 2019 with a reemphasized focus on space as a warfighting domain.