(FILES) (L/R) Acting Chief of Staff of the Army General Christopher LaNeve and US Secretary of the Army Dan Driscoll testify during a House Appropriations Subcommittee on Defense budget hearing for the US Army on Capitol Hill in Washington, DC, on April 16, 2026. US Army Secretary Dan Driscoll has submitted his resignation, the White House confirmed Monday, following reports of tensions with Defense Secretary Pete Hegseth. (Photo by SAUL LOEB / AFP via Getty Images)