US Army Secretary Dan Driscoll submitted his resignation to President Donald Trump, after months of tension with Defense Secretary Pete Hegseth regarding the army's directions and decisions to dismiss a number of senior officers, according to the Wall Street Journal. Driscoll is expected to leave the US Department of Defense in the coming days, in a new change affecting the senior leadership of the army, amid disagreements regarding the management of the military institution and the files of appointments and promotions. The White House confirmed Driscoll's departure, praising the role he has played since taking office. White House spokeswoman Anna Kelly said that he was “very effective” in implementing Trump’s agenda within the Department of the Army, and contributed to enhancing readiness and combat capability, as well as his participation in negotiations related to Russia and Ukraine. The resignation comes after reports of disagreements between Driscoll and Hegseth regarding the course of the army and decisions that affected a number of its senior leaders. Last April, Driscoll denied his intention to resign. His departure would leave the Army's top two civilian and military positions without Senate-confirmed officials, with General Christopher Lanev assuming the position of acting chief of staff. Driscoll assumed the position of Secretary of the Army in February 2025, and played a role in plans to modernize the ground forces and enhance the use of modern military technologies.