• Army Secretary Dan Driscoll resigns after 18 months in office.
• The resignation follows reported tensions with Defense Secretary Pete Hegseth.
• Driscoll is recognized for advancing President Trump's military agenda.
• His departure is part of ongoing upheaval within the Pentagon's leadership.
• Driscoll played a key role in military negotiations amid global conflicts.

U.S. Army Secretary Dan Driscoll has resigned after just 18 months in the position, confirmed by the White House amidst ongoing tensions with Defense Secretary Pete Hegseth. While no explicit reason for his departure was given, it marks another instance of significant personnel changes within the Trump administration's military leadership, according to CBS News and Reuters.

Driscoll, who was confirmed in February 2025, was known for his close ties with Vice President JD Vance and his efforts to modernize the Army. He was instrumental in negotiating military strategies during crucial operations, including those related to Russia and Ukraine, as well as advocating for less bureaucratic processes for military contractors. He stated that “the defense industrial base broadly, and the primes in particular, conned the American people,” showcasing his determination for reform, according to South China Morning Post and Reuters.

His resignation follows a series of high-profile departures in the military ranks under Hegseth, including the ousts of General Randy George and Navy Secretary John Phelan. Driscoll's exit reflects the tumultuous state within the Pentagon as multiple leadership changes occur, with Hegseth facing criticism for his management style. As reported, the Army's chief of staff position has also seen rapid changes, impacting military strategy, according to CBS News.