The resignation of Army Secretary Dan Driscoll has intensified scrutiny of the Trump administration's overhaul of Pentagon leadership, with some Democrats and Republicans warning that Defense Secretary Pete Hegseth's approach is destabilising the military's senior ranks. However, presidents removing top military figures is a longstanding practice rather than a new development, with precedents stretching from Abraham Lincoln to Harry Truman. What critics say distinguishes the current situation is the speed and scale of the turnover, fuelling debate over whether the changes are strengthening the armed forces or leaving damaging leadership gaps.

At least 20 military leaders have left their posts during Trump's second term amid disputes over Hegseth's leadership style, military strategy and DEI policies, according to a CBS report. Senator Thom Tillis warned of a "leadership void", while Senator Jack Reed accused Hegseth of punishing dissent, though Pentagon spokesman Parnell defended him as a "transformative leader" who has boosted morale and recruitment. The article draws parallels with past presidential shake-ups, including Truman's dismissal of Douglas MacArthur over Korean War strategy, Obama's acceptance of Chuck Hagel's resignation in 2014, and Lincoln's removal of generals McClellan and Burnside during the Civil War. Trump has named Adam Telle as acting Army secretary following Driscoll's departure.