After overseeing a purge of Pentagon advisory committees last year, Defense Secretary Pete Hegseth is adding a new one to the list, focused on homeland security and defense.
Announced in the Federal Register Sept. 11, the Homeland Defense Board aims to fill a gap Hegseth sees in providing military guidance to homeland security missions.
“The specific, integrated advice required by the SecWar regarding the military’s mission of defense of the Homeland and Homeland security cooperation is not available from any other Federal advisory committee, government agency, or alternative source,” establishing documents state.
“Department of war” and “secretary of war” are the Trump administration’s preferred monikers for the Defense Department and its head. Legislation to legally change the agency name is pending in Congress.
“While other agencies and departments operate within specific mission or geographic areas, their advisory mechanisms are statutorily constrained to their respective non-military domains,” the panel’s establishing documents add. “Relying solely on internal DoW staff or contracted studies is also insufficient, as it fails to provide the consensus-based, independent, and external peer review required at the highest levels of strategic decision-making.”
The board is to consist of up to 20 members, including the secretary of defense, who will serve as chair; the assistant secretary of defense for Homeland Defense and Americas Security Affairs as vice chair; and the deputy assistant secretaries of defense for Homeland Defense and Defense Continuity and Mission Assurance.
Also on the board will be one civilian and one field- or mid-grade officer from each military branch and “such other members as the SecWar or the Deputy Secretary of War may appoint or designate,” establishing documents state.
Asked for comment, an official said the Pentagon had “nothing to provide” about the new board’s creation.
The advisory board is the first of its kind for the Pentagon focused on homeland security, and the announcement argues that no other agency’s board can fill the need that defense leaders now see. The Department of Homeland Security’s Homeland Security Advisory Council cannot fill the role because it focuses on civilian law enforcement and “lacks the mandate to advise on Title 10 or Title 32 [domestic troop] deployments” and military-specific crises, it states.
It also finds the Department of State’s International Security Advisory Board, with its focus on diplomacy and arms control, “underequipped” to deliver strategies for military campaign plans in the Americas.
“Over the past 10 years, rather than lessening, the threat from peer, near-peer, and rogue-state adversaries, in addition to non-state actors and hostile asymmetric activities, has become more intense and complex,” justifying documents continue. “The DoW provides for the common defense of American citizens and the Homeland by deploying and maintaining the premier warfighting force across the globe to provide a multi-domain, layered defense … In an era where peer and near-peer adversaries are actively projecting economic, cyber, and military power into the Western Hemisphere, the HDB will provide critical, independent assessments of the DoW’s hemispheric defensive posture and domestic security preparedness.”
The large-scale deployment of National Guard troops to U.S. cities to support law enforcement; the ongoing deployment of troops to the southern border; and the aggressive move into drug interdiction missions traditionally executed by the U.S. Coast Guard have all blurred the lines between the mission sets of the Department of Defense and the Department of Homeland Security. The establishing memo suggests the new board will create a bridge between the two that didn’t previously exist.
“The [Homeland Defense Board] will … provide the SecWar advice and recommendations necessary for strategic oversight for multi-theater security cooperation and multi-domain actions, validating that DoW resource investments and allocations are successfully countering foreign influence, disrupting transnational criminal networks, and building robust partner-nation military capabilities,” it states.
“Finally, the HDB’s advice and recommendations will serve an essential function by bridging the gap between the military and domestic Homeland security agencies to secure the defense critical infrastructure, vital transport networks and logistics nodes and the defense industrial base. Without this advisory body, the DoW risks strategic blind spots in its primary mission to protect the Homeland.”
According to the General Services Administration, there are now roughly 40 federal advisory committees serving the Pentagon. In March 2025, shortly after taking office, Hegseth dismissed all members of existing boards to conduct a “zero-based review” of their necessity and contribution to “warrior ethos.” Among boards terminated at the review’s conclusion were the 75-year-old Defense Advisory Committee on Women in the Services and the Defense Advisory Committee for the Prevention of Sexual Misconduct.
