Just Installed IL-2: 1946 and I'm Completely Baffled

[scrapser]

Can someone help me understand this sim? I'm not sure what I bought. The box says it has IL-2 plus three add-ons and I have read online they are all installed as part of 1946. The PDF manual is for Pacific Fighters because it's the most recent. I get all this so far.

But I tried to see how the sim performs so I picked a USAAF P-51D mission. I ended up sitting on some base in the Pacific hearing messages in Russian! What is that all about? Is there a language setting in the configuration?

I was expecting this sim to have campaigns in theaters like Europe, Eastern Front, Pacific, The Med, etc. Is this a single player standalone game or made primarily for online play?

I would really like to converse with someone who fully understands how the sim is structured and can walk me through the confusion.

Thanks