Daniel Driscoll, the Army’s civilian chief, submitted his resignation to President Trump on Monday, according to administration officials. He has repeatedly clashed with Defense Secretary Pete Hegseth over the removal of seasoned commanders from the Army’s senior ranks and refusal to promote women and people of color. The Army has also been without a chief of staff since Hegseth fired General Randy George back in April without explanation. Hegseth has also removed at least three senior officers once considered contenders for the job.