(COMBO) This combination of pictures created on September 1, 2026 shows (L/R) US Defense Secreatry Pete Hegseth in Washington, DC, on August 3, 2026 and US Secretary of the Army Dan Driscoll in Washington, DC, May 12, 2026. Driscoll, the US Army's top civilian leader, has submitted his resignation, the White House confirmed on September 1, 2026, following reports of tensions with Defense Secretary Pete Hegseth. If accepted, Driscoll's resignation would mark the latest departure of a senior leader in the US military under President Donald Trump's administration. (Photo by Jim WATSON and SAUL LOEB / AFP via Getty Images)