Space Force or Space Corps?

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Competing Visions for a New Military Service

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The Issue

In 2018, President Trump requested that the U.S. military restructure its space offices and personnel to create a U.S. Space Force. Since then three competing visions for how the Department of Defense (DoD) should be restructured to better support its national security space enterprise have been crafted: one from the DoD itself and two from either chamber of Congress. This brief compares these three legislative proposals to create a new military service for space. For a side-by-side comparison, see the table in Appendix 1.

While not a new concept, the creation of a separate military service for space has gained significant momentum over the past few months. On February 28, 2019, the Department of Defense (DoD) submitted to Congress a legislative proposal to create a new military service for space within the Department of the Air Force called the United States Space Force. Initially Congress was lukewarm on the idea, but the relevant committees took up the issue and held public hearings and private meetings with officials, military professionals, and outside experts to discuss the concept.

In May and June 2019, the Senate and the House Armed Services Committees (SASC and HASC, respectively) passed military space reorganization language in their versions of the fiscal year (FY) 2020 National Defense Authorization Act (NDAA). Both committees address the issue in similar ways, yet with a few key differences.

Principally, the SASC markup is much more detailed on the requirements for the new Space Force. Arguably, the legislative proposal from DoD could be construed as a “blank check,” causing the committee to add several reporting requirements and clear structural language. However, there is a key missing item despite SASC’s detailed structural language: the actual declaration of a new service being created. The SASC markup never explicitly declares the establishment of a new service of the U.S. military, although it is clearly implied. The current language solely renames the existing Air Force Space Command — the primary organization that houses space personnel and capabilities within the Air Force — to the U.S. Space Force.

The HASC language creating a new military service for space did not make it into the chairman’s mark of the NDAA, but it was added as an amendment to the legislation during the full committee markup. The bipartisan amendment came from congressmen, Jim Cooper (D-TN) and Mike Rogers (R-AL), who proposed a Space Corps in 2017. Unsurprisingly, the amendment looks very similar to the 2017 language that passed the full House but was later taken out in conference. The HASC version places strong emphasis on both career-building within the Space Corps and budget reporting requirements.

The most obvious difference between the SASC and HASC legislation is the name of the new service. SASC supports the name championed by President Donald Trump, the U.S. Space Force, while the HASC calls it the U.S. Space Corps. However, both envision the organization as a corps-like structure within the Department of the Air Force and a co-equal service to the U.S. Air Force. Neither supports elevating the organization to an independent military department, which is what President Trump originally suggested in June 2018.1

Unlike the DoD proposal, both SASC and HASC did not include a new top civilian position within the Air Force for space. This is in line with how the Marine Corps is currently structured—with the Commandant of the Marine Corps reporting directly to the secretary of the Navy. Both the SASC and HASC legislation propose a similar structure. Also similar to the Marine Corps, both the SASC and HASC propose that the new space service be led by a four-star military leader, although the names of this new position differ. The administration proposal called the head of the Space Force a chief of staff, while the SASC calls it a commander and the HASC calls it a commandant. The SASC markup also creates a four-star vice commander position, replicating the Marine Corps’ model, while the HASC makes no mention of a vice commandant position.

All three legislative proposals add the four-star in charge of the new military service to the Joint Chiefs of Staff (JCS). Both DoD’s and HASC’s language immediately adds the head of the space service as a representative to the JCS. The SASC markup language, however, defers the new commander to an invite-only role for the first year. The language states “upon the request of the Chairman of the Joint Chiefs of Staff, the Commander of the United States Space Force may participate in any meeting… of an issue in connection with a duty or responsibility of the Commander.”After the first year, however, the commander would become a full member of the JCS.

The relationship between the Space Force and U.S. Space Command (SPACECOM) also stands out in the SASC legislation by requiring the commander of SPACECOM, likely to be Gen. John Raymond, to also act as the commander of the Space Force for the first year. After a year’s time, it requires that the positions be separated.3

All three proposals (DoD, SASC, and HASC) make clear that the National Reconnaissance Office (NRO) will not be included in the new military service. While the fate of the NRO is unanimous, the fate of Army and Navy space operations are not. DoD’s proposal included space-related personnel and operations from both the Army and Navy, although it deferred specifying which specific organizations would transfer. The HASC amendment walked that back slightly by not including the Army and Navy at the outset, but requiring the Secretary of Defense to later report to Congress “plans for the transfer or reassignment of military personnel from the space elements of the Armed Forces to the Space Corps.”SASC’s proposal outrightly states that only personnel and operations currently belonging to the Air Force will be included in their version of the U.S. Space Force.

Markedly different in the SASC proposal is the elevation of the current principal assistant to the secretary of the Air Force for space to a principal assistant for space acquisition and integration. This new position will coordinate space acquisition efforts by overseeing the Space and Missile Systems Center (SMC), the Space Rapid Capabilities Office (Space RCO), and the new Space Development Agency (SDA). The apparent intent is to coordinate across all space acquisitions and speed decision making processes. In addition, the SASC legislation creates a Space Force Acquisition Council comprised of:

  • The Under Secretary of the Air Force;
  • The Principal Assistant to the Secretary of the Air Force for Space Acquisition and Integration;
  • The Assistant Secretary of Defense for Space Policy;
  • The Director of the National Reconnaissance Office (NRO);
  • The Commander of the United States Space Command; and
  • The Commander of the United States Space Force.

The purpose of the council is to oversee and coordinate space acquisitions amongst all aspects of the national security space enterprise.

While there is much to deliberate in conference, the two Congressional proposals are structurally similar, and it is likely that military space reorganization will be placed in the final version of the FY 2020 NDAA. See Appendix 1 for a table visually comparing the similarities and differences described in the text above.

Kaitlyn Johnson is associate fellow and associate director of the Aerospace Security Project at the Center for Strategic and International Studies (CSIS) in Washington, D.C.

This brief is made possible by general support to CSIS. No direct sponsorship contributed to this brief.

CSIS Briefs are produced by the Center for Strategic and International Studies (CSIS), a private, tax-exempt institution focusing on international public policy issues. Its research is nonpartisan and nonproprietary. CSIS does not take specific policy positions. Accordingly, all views, positions, and conclusions expressed in this publication should be understood to be solely those of the author(s).

© 2019 by the Center for Strategic and International Studies. All rights reserved.


*Unlike DoD’s legislative proposal or the HASC amendment, the SASC NDAA markup does not overtly state that a new service is being established within the Department of the Air Force.
*For the first year, the commander of U.S. Space Command will also serve as the commander of the U.S. Space Force.


1Katie Rogers, “Trump Orders Establishment of Space Force as Sixth Military Branch,” New York Times, June 18, 2018,
2U.S. Senate Armed Services Committee, “National Defense Authorization Act for Fiscal Year 2020,” 116th Cong., 1st sess., 2019, S. 1790, 630,
3U.S. Congress, Senate, Armed Services Committee, Nominations -- Scolese, - Raymond, 116th Cong., 1st sess., (June 4, 2019),
4U.S. House of Representatives Armed Services Committee, “National Defense Authorization Act for Fiscal Year 2020: Amendment to H.R. 2500,” 116th Cong., 1st sess., 2019, H.R. 2500, 9,

Kaitlyn Johnson

Kaitlyn Johnson

Former Deputy Director and Fellow, Aerospace Security Project