US Army Secretary Dan Driscoll has submitted his resignation to Donald Trump, the White House confirmed on Monday. Driscoll is stepping down after 18 months on the job, marking the latest high-profile departure of a top military leader during the second Trump administration.
Although the White House gave no official reason for the departure, Driscoll had reportedly experienced months of turmoil and tension with Defense Secretary Pete Hegseth. The two clashed over leadership decisions and personnel, and Driscoll, who is second in line to the defense secretary, had reportedly been eyeing an exit amid the friction.
Driscoll is a close associate of Vice President JD Vance and has been well-regarded by lawmakers on both sides of the aisle. He also maintained a close relationship with the ousted Army chief of staff and was once viewed as a potential replacement for the defense secretary.
The resignation is the latest in a series of shake-ups regarding military leadership, with the Army seeing particularly major upheaval. This leadership change occurs as the military conflict with Iran continues.