The directive won’t rename the Defense Department, which would require congressional approval, but it will make the Department of War its secondary title.

Donald Trump will sign an executive order Friday adding “Department of War” as the secondary title of the Defense Department, two White House officials told NBC News.

The order, which Trump is expected to sign in the Oval Office, won’t rename the Defense Department, but it will authorize Defense Secretary Pete Hegseth to use secondary titles like “secretary of war” and “Department of War” in official correspondence and public communications and during formal ceremonies, according to a White House preview of the order.

Trump will require all executive departments and agencies to “recognize and accommodate these secondary titles in internal and external communications.”