POTUS doesn't have the power to set an official language.

It's not the Department of War, either. Still says that everywhere.

Legal documents, contracts, and court filings must continue to use Department of Defense because legally the Department of War doesn't exist.

Talk is cheap.

Actually they are following through, check the news

the US Dept of War is doing far more than just talk tho.

see also: half of the middle east on fire.

Why not? Maybe they do?