In a separate post on X, Hegseth wrote, "Harvard is woke; The War Department is not."
Starting with the 2026-27 academic year, the Pentagon will discontinue graduate-level professional military education, fellowships and certificate programs, the statement said. Personnel currently attending classes at Harvard will be able to finish those courses.
Similar programs at other Ivy League universities will be evaluated in coming weeks, Hegseth said.
Hegseth earned a master's degree from Harvard but symbolically returned his diploma in a 2022 Fox News segment. A Pentagon social media account run by Hegseth's office resurfaced the clip in which Hegseth, then a Fox News commentator, returned the diploma and wrote "Return to Sender" on it with a marker.
The military offers its officers a variety of opportunities to get graduate-level education both at war colleges run by the military as well as civilian institutions like Harvard.