Just what I read on the home page http://www2.hitechcreations.com/frindex.html
Welcome to the Internets premier WWII combat experience!
- engage in air sea or land combat
create your own mission
form a squadron
partecipate in historical scenarios
then I ask myself why HTC has modeled hangars, cities, supplying systems, meteo, para troops......and so on
This is definitely a flight sim, to me (but I'll let you use it as you want without throwing any sentence ) 
Ok, can you not create missions with vehicles as well? Are vehicles not involved in scenarios?
The answers to those are yes, and why yes they are.
Like I said before, it is primarily used as a flight sim, I'm just getting tired of people ranting and raving that it is only that and nothing more. The one thing I totally agree with is that everyone will play how they like, and there is nothing wrong with that. There is no wrong or right way to play the game. Some folks want to feel immersion, some folks just want to play a "game". Some folks like gv's, some don't. Some like bombing, some don't. This thing is as everything else is in life, when you have 2 or more people get together with some common link, there will be differences. Who's to say who is right and who is wrong, it's all individual perception. I do agree that some things people do are lame to me, but they're not to them, and it doesn't matter if they do them in a fighter, bomber, gv, PT boat, field gun, Shore Batt, or whatever.