You don't seem to quite understand. I am not suggesting that any of the briefings in game would be replaced by German briefings. I am suggesting that German briefings be available in addition to the English versions. Probably in scenario files in the repository that you almost certainly wouldn't even bother to download if you couldn't read German. Also(kind of a sidebar I suppose), since your post seems to suggest that you think CM is my entire plan for learning German, it isn't. No one thing ever is for any language. I have flashcards for vocabulary(over 5000 of them), a textbook for grammar and sentence composition, lots of books, movies, music, and audio books for immersion, a dictionary for stray words not on my flashcards, and I will soon begin finding some German friends to practice my speech with(once I gain a bit more confidence). But I found it very helpful last year, when I was learning Korean, to extend my immersion into my time spent playing computer games as well(fairly easy to find Korean language versions for several mainstream games). Becoming fluent in another language quickly involves taking advantage of everything you can. Whether you are reading a book(Harry Potter und der Stein der Weisen), relaxing to music(Luxuslärm, Elif, Fayzen, Christina Stürmer, Rammstein!), or reading your orders before smashing some American tanks, every chance to maximize your time spent using and practicing your target language is worth taking.