Army Secretary Dan Driscoll plans to resign from his position at the Pentagon by the end of 2026. Sources familiar with the matter stated Friday that the decision follows a period of administrative tension with Defense Secretary Pete Hegseth. Driscoll’s spokesperson declined to comment on the reported departure.
Driscoll, a former venture capitalist and ally of Vice President J.D. Vance, was confirmed by the Senate in February 2025 with a 66-28 vote. During his tenure, he focused on modernizing military equipment, improving living conditions for service members, and incorporating commercial technology into warfare based on observations from the conflict in Ukraine.
Internal disagreements within the Department of Defense have been reported over the past year. Tensions between Driscoll and Hegseth reportedly increased when President Trump selected Driscoll to lead negotiations with Ukrainian officials regarding the Russia-Ukraine war. Additionally, Hegseth removed the Army’s Chief of Staff, Gen. Randy George—a close collaborator of Driscoll—in April. The subsequent nominee for the role, Gen. Christopher LaNeve, currently faces opposition from lawmakers in the Senate.
The transition also influences how the U.S. military adapts to modern combat. The Army is currently phasing out a specific battalion within the 173rd Airborne Brigade that was dedicated to studying unmanned systems and lessons from the war in Ukraine. This shift in organizational priority, supported by departing or ousted leadership like Driscoll and Gen. George, may change the type of equipment and technology soldiers are issued and trained on beginning in late 2026. Small defense technology contractors and commercial tech firms may also see shifts in procurement priorities as the "aggressive" push for commercial tech integration faces a change in leadership.
The vacancy at the top of the Army leadership comes as the confirmation of a permanent Chief of Staff remains uncertain. If Driscoll departs as planned by the end of 2026, the administration will need to secure Senate confirmation for a successor while simultaneously addressing the bipartisan objections currently stalling Gen. LaNeve’s appointment. This creates a period of dual-leadership transition for the Army. The specific date for Driscoll’s final day in office has not been reported beyond the late 2026 timeframe.
What happens next: Driscoll is expected to remain in his role for approximately four more months to reach the end of 2026. No specific dates for a resignation letter or a Senate hearing for a replacement have been set. Gen. Christopher LaNeve continues to serve as acting Chief of Staff while awaiting further Senate action on his confirmation.