You were paired with your colonel, König on a mission where you couldn't use the internet connection for personal requests.

You didn't talk to him much but he asked you to just call him König. So you okay with that.

The song, Rein Raus by Rammstein, which you added to your playlist before coming mission, had become your new favorite. It was in German and you didn't understand a word of it and you couldn't look it up online. So you went to the barrack to ask König to translate it for you.