Army Secretary Dan Driscoll has submitted his resignation letter directly to President Trump, marking a significant shift in the United States Army leadership after months of reported discord within the Pentagon. The resignation remains pending acceptance by the White House as of Monday evening, though Driscoll is expected to depart the Pentagon within days.

According to U.S. officials, Driscoll’s decision follows prolonged tensions with Defense Secretary Pete Hegseth over strategic directions for the Army and the removal of senior officers. A key flashpoint occurred in April when Army Chief of Staff Gen. Randy George—a close associate of Driscoll—was ousted from his position.

The resignation letter accelerates a timeline that had previously suggested Driscoll might remain through the end of the year. While reports indicated months of friction between Driscoll and Hegseth, White House spokeswoman Anna Kelly praised Driscoll’s tenure, stating he “advanced President Trump’s agenda at the Army,” restored focus on readiness and lethality, and contributed to negotiations with Russia and Ukraine. The statement did not cite reasons for his resignation or name a successor.

Driscoll, who was sworn in as the 26th Secretary of the Army on February 25, 2025, oversees nearly one million active-duty personnel and over 265,000 civilians. A veteran himself, Driscoll served as an armor officer during Operation Iraqi Freedom before attending Yale Law School and holding roles in investment banking. His departure leaves unresolved the question of who will lead the Army next, with President Trump’s decision pending.