(FILES) US Secretary of the Army Dan Driscoll testifies during a House Appropriations Subcommittee on Defense budget hearing for the US Army on Capitol Hill in Washington, DC, on April 16, 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 SAUL LOEB / AFP via Getty Images)