Trump Rebrands U.S. Department of Defense to 'Department of War'

On September 5, 2025, President Donald Trump signed an executive order officially renaming the U.S. Department of Defense to the "Department of War." This rebranding initiative aims to project a more assertive national security posture for the United States.

The executive order permits the use of titles such as "Secretary of War," a change already adopted by Defense Secretary Pete Hegseth, who has begun using this title in public appearances. This move aligns with the administration's broader objective to re-establish traditional nomenclature and symbols. Earlier in 2025, President Trump signed Executive Order 14172, "Restoring Names That Honor American Greatness," which reinstated the federal designation "Mount McKinley" for Denali and renamed the Gulf of Mexico to the "Gulf of America."

The historical lineage of the War Department traces back to 1789, serving until 1947. It was subsequently integrated with the Department of the Navy and the newly formed Air Force to create the National Military Establishment, later officially designated as the Department of Defense in 1949. Proponents of the name change argue that "Department of War" more accurately reflects the department's mission and conveys a stronger message of readiness and resolve, harkening back to periods of significant American military victories.

However, the rebranding has drawn scrutiny. Critics have voiced concerns regarding the potential financial implications, citing the substantial costs associated with updating signage, materials, and official designations across numerous global military installations. Furthermore, the permanence of this name change may necessitate congressional approval, as the Department of Defense was originally established through legislative action. Supporters maintain that the new name better articulates the department's purpose and signals a clear readiness for military action when deemed necessary. The administration has expressed confidence that Congress will support the change, should legislative approval be required.

The executive order, signed on September 5, 2025, marks the official commencement of this transition, reflecting a deliberate effort to reshape the perception of the nation's defense capabilities and historical identity.