United States Space Command
The United States Space Command (USSPACECOM) was a Unified Combatant Command of the United States Department of Defense, created in 1985 to coordinate the use of outer space by the United States Armed Forces. The Commander in Chief of U.S. Space Command (CINCUSSPACECOM) also functioned as the Commander in Chief of the binational U.S.-Canadian North American Aerospace Defense Command (CINCNORAD), and for the majority of time during USSPACECOM's existence, was also as the Commander of Air Force Space Command.
|United States Space Command|
U.S. Space Command emblem
|Type||Unified Combatant Command|
|Garrison/HQ||Peterson AFB, Colorado|
In 2018 it was announced that U.S. Space Command would be reactivated as a unified combatant command.
In the aftermath of the 9/11 attacks, the armed forces' focus homeland defense and counter-terrorism was significantly increased, which resulted in space being deemphasized. It was in this context that the unified command plan was reevaluated, resulting in U.S. Northern Command being established for the defense of the North American continent, while U.S. Space Command was merged with U.S. Strategic Command, where it became the Joint Functional Component Command for Space and Global Strike. In 2006 this would be replaced by the Joint Functional Component Command for Space, and in 2017 be reorganized as the Joint Force Space Component Commander
The 2019 National Defense Authorization Act, which was signed into law in 2018, directed the reestablishment of U.S. Space Command as a sub-unified combatant command under U.S. Strategic Command, however in December it was directed that U.S. Space Command will instead be reestablished as a full unified combatant command, with full responsibilities for space warfighting held under U.S. Strategic Command. 
|Name||Photo||Start||End||Notable offices held before or after|
|1||General Robert T. Herres, USAF||1985||1987||1st Vice Chairman of the Joint Chiefs of Staff (1987–1990)|
|2||General John L. Piotrowski, USAF||1987||1990||22nd Vice Chief of Staff of the Air Force (1985–1987)|
|3||General Donald J. Kutyna, USAF||1990||1992||Member of the Rogers Commission (1986–1988)|
|4||General Charles A. "Chuck" Horner, USAF||June, 1992||September, 1994||Commander, 9th Air Force, and Commander, U.S. Central Command Air Forces (1987–1992), he led U.S. and allied air operations for Operations Desert Shield and Desert Storm.|
|5||General Joseph W. Ashy, USAF||September, 1994||August, 1996|
|6||General Howell M. Estes III, USAF||August, 1996||August 14, 1998|
|7||General Richard B. Myers, USAF||August 14, 1998||February 22, 2000||5th Vice Chairman of the Joint Chiefs of Staff (2000–2001)|
15th Chairman of the Joint Chiefs of Staff (2001–2005)
|8||General Ralph E. "Ed" Eberhart, USAF||February 22, 2000||October 1, 2002||27th Vice Chief of Staff of the Air Force (1997–1999)|
Commander, United States Northern Command (2002–2005)
- Handberg, Roger (2000). Seeking New World Vistas: The Militarization of Space. Greenwood Publishing Group. p. 109. ISBN 0275962954.
- Pike, John. "United States Space Command". www.globalsecurity.org. Retrieved 27 August 2018.
- "Trump Signs National Defense Authorization Act for Fiscal Year 2019". AIP. 17 August 2018. Retrieved 27 August 2018.
- Donald J Trump (18 December 2018). "Text of a Memorandum from the President to the Secretary of Defense Regarding the Establishment of the United States Space Command". The White House. Retrieved 20 December 2018.