"Department of War!": White House pushes DoD renaming

"It used to be called the Department of War and it had a stronger sound," Trump said. "We want defense, but we want offense too...as Department of War we won everything, we won everything and I think we're going to have to go back to that."

The War Department became the Department of Defense through a gradual process, beginning with the National Security Act of 1947, which unified the army, navy, and air force under a single organization called the National Military Establishment.