Army Secretary Dan Driscoll has submitted his resignation to President Trump and is expected to leave his position at the Pentagon in the coming days. His departure follows months of reported tension between Driscoll and Secretary of War Pete Hegseth.

Driscoll's last day is anticipated to be as early as September 4. The Wall Street Journal was the first to report on his resignation.

White House spokeswoman Anna Kelly stated that Driscoll has been "highly effective in advancing President Trump's agenda to Make America Strong Again at the Department of the Army." She cited his leadership during "historic military operations," restoring a focus on "readiness and lethality," and assisting with negotiations between Russia and Ukraine as examples of his work. "The United States Army is more powerful than ever thanks to his work alongside the Commander-in-Chief and Secretary of War," Kelly added.

The New York Post had previously reported on Hegseth's concerns about potentially being replaced by Driscoll, indicating a protracted period of friction between the two officials.

U.S. Army Secretary Dan Driscoll at a Senate Armed Services Committee hearing.