Why It Matters
The Congressional Research Service has updated its foundational report on congressional management of Department of Defense (DOD) officers, arriving at a moment when the Trump administration is actively shrinking the ranks of the military's most senior leaders. The report, updated May 29, 2026, maps the statutory framework governing general and flag officers (GFO) and frames a set of questions Congress will have to answer as the executive branch moves faster than the law anticipated.
In the U.S. Constitution, as per the report, Congress holds constitutional authority to "make Rules for the Government and Regulation of the land and naval Forces," and the executive branch holds command authority. When those two powers pull in opposite directions over who leads the military and how many stars they wear, the statutory framework for general and flag officers becomes the rulebook both sides are fighting over.
The Big Picture
Secretary of Defense Peter Hegseth issued a memorandum on May 5, 2025, directing a minimum 20 percent reduction in four-star positions across the Active Component, a minimum 20 percent reduction of general officers in the National Guard, and an additional minimum 10 percent reduction tied to realignment of the Unified Command Plan.
However, the Senate's advice and consent authority over officer nominations is not a procedural formality. For three-star and four-star positions, the President designates positions of "importance and responsibility" under 10 U.S.C. §601, but an officer only holds that grade if appointed by the President with Senate confirmation. That confirmation requirement is a structural brake on rapid reshuffling of the military's most senior ranks.
As of Sept. 30, 2025, there were 848 active-duty GFOs subject to statutory caps, nine below the maximum of 857 authorized by law. The statutory caps set maximums, not minimums, which means the executive branch has legal room to reduce below those ceilings. Hegseth's directive operates in that space.
The FY2026 National Defense Authorization Act made targeted adjustments to those caps, reflecting a congressional judgment about where the military is heading, not just where it has been.
Since 1965, the total active force has dropped by approximately 51.9 percent, from 2.66 million to 1.28 million personnel. Over the same period, the share of the force made up of GFOs increased by roughly 40 percent. In 1965, GFOs made up about one-twentieth of one percent of the total force. By 2024, they made up about one-fifteenth of one percent.
Critics of the growing GFO proportion make an argument for cost. A one-star Brigadier General or Rear Admiral (Lower Half) receives approximately $272,802 in Regular Military Compensation in 2026, while the highest ranking GFOs are expected to make approximately $296,539 per year.
Technological change adds another dimension, since modern weapons systems require fewer personnel to deliver greater firepower, which means a GFO may command a smaller headcount while overseeing forces of substantially greater lethality. The advent of space and cyber as operational domains has also created new commands, U.S. Space Force and U.S. Cyber Command among them, each requiring senior leadership structures.
Political Stakes
For the Administration
Hegseth's directive gives the administration significant room to act within existing law. Statutory caps are ceilings, and the executive branch has always had authority to operate below them. What the administration cannot do without congressional action is eliminate positions that are required by statute or downgrade positions whose grades are fixed in law.
The military officer confirmation process introduces a second constraint. Rapid installation of new four-star officers in restructured commands still requires Senate confirmation. That process is not easily accelerated, and a Senate that declines to confirm a nominee can effectively block a key appointment regardless of what the executive branch intends.
For Congress
The FY2026 NDAA added a notification requirement with direct relevance to the current moment. Under the amended 10 U.S.C. §§151 and 164(a), the President must notify Congress within five days of removing or transferring a member of the Joint Chiefs of Staff or a combatant commander, along with a statement of reasons.
The report lays out additional options Congress could consider: specifying tour durations for combatant commanders, requiring particular assignment histories for nominees, establishing service rotation requirements for combatant command assignments, or requiring presidential reports to Congress on certain GFO assignments outside the standard framework.
For the Public
The practical question is whether the military's senior leadership structure, built over decades of statutory accretion and executive practice, can be reshaped quickly without degrading the institutional knowledge and coalition relationships that GFOs carry. That question does not have a clean answer in the report, which presents both the efficiency arguments and the operational justifications without adjudicating between them.
The Bottom Line
The CRS report arrives as a reference document for a live dispute. The administration has the legal authority to reduce GFO numbers below statutory caps, while Congress has the authority to require notification, confirm or withhold confirmation of nominees, and legislate new constraints on how that reduction proceeds.
What neither branch has done yet is resolve the fundamental question the report poses: what is the right number of GFOs for the force the United States has today, and what criteria should drive that answer? The final list of positions targeted under Hegseth's directive remains unreleased. Until it is, Congress faces a choice the report describes plainly, whether to await further executive action or to move legislatively to shape the outcome.