As a recap, my reply to your reply was that DoD is the actual newspeak, and your reply to that evolution of the discussion is that you were not discussing newspeak.
In trying to understand if I'm missing something, I looked up what newspeak means. I (as well as probably a few other commenters based on the contents of their comments) was under the assumption it meant "new speak" meaning it's something new.
In case anyone else reading this was not aware of this, this is what I discovered.
It's a term from George Orwell's 1984, describing a language used to make thoughts unthinkable by removing words from the language. It has nothing to do with "age of the term."
Hence, Dept of Defense is indeed newspeak. Dept of War, while being a new name for the dept, is too literal to be newspeak.
Thanks for the opportunity for me to learn something!