It was originally entitled “Department of War” and was changed after World War II for better PR. Whether it is called “Department of War” or “Department of Defense”, it’s still the same organization maintaining the same mission operating under the same budget.
Personally, I view “Department of War” as more honest, because War has always been its business.
> Whether it is called “Department of War” or “Department of Defense”, it’s still the same organization maintaining the same mission operating under the same budget.
The mission of the Department of War, which was its name pre-WW2, and the mission of the Department of Defence (post-WW2) is completely different: this is evidenced by the number of military personnel in the two time periods (and the draw-down in personal post-1990, after the Cold War ended):
* https://www.statista.com/statistics/1066986/us-armed-forces-...
* https://en.wikipedia.org/wiki/File:US_military_personnel_and...
> it’s still the same organization maintaining the same mission operating under the same budget
WWII demonstrated wars of conquest don't work in the industrial age. When America and its Department of War and Navy were founded, invasion and conquest could still be done profitably. WWII showed that was no longer true–industrial machinery and skilled workers are destroyed by invasion and even base resources quickly become useless when surrounded by people who hate you. (Nuclear weapons sealed the equation.)
The Americans who fought in WWII saw that lesson firsthand and seem to have genuinely pivoted away from wars of conquest and annexation towards something closer to status quo preservation. We, of course, still went to war. But it was generally to help the current leader repel something or the other. The case in point for this is the truly devilish stuff having been shifted to the CIA's clandestine portfolio.
Renaming the DoD the DoW basically says all that clandestine stuff wasn't shameful, it's good. It's a real message being written by idiots who don't know history or war and are mastered by their own insecurities.
Big difference between defense of a country and starting wars. Canada and Switzerland don't start wars but they still have a military in case they ever need it to protect from an aggressor. Like Russia or the Canadian neighbor to the south who has a president making social media posts with the US flag over all of North America. Which suits the name, "Department of War".
Well, except the administration changed the name and then immediately engaged in wars of blatant aggression with Venezuela and Iran.
What we choose to call things *is* important.
This is actually not true! This is a pedantic point but I think is important.
The department of defense is not equivalent to the pre-1947 War Department. The War Department was in charge of just the army. There was a separate Department of the Navy. There was no over-arching department for all of the US military.
Post WW2 the US military was restructured to organize all of the branches (including the newly-formed Department of the Air Force) under a united civilian leadership. This was done in the National Security Act of 1947. The new structure was initially called the National Military Establishment and then renamed to the Department of Defense.
So the department of war name going away wasn’t a PR thing. It was because of military parochialism. If they had called this unified structure the Department of War it would have seemed like the Army was now taking over the other branches! And I promise you today’s Admirals understand that history, even if the secretary of defense doesn’t.