Excellent War Sim !
I immediately jumped into the campaign and was overwhelmed and somewhat turned off by the game. But then I went into the Armory, Scenarios, and Showcases. Basically a giant sandbox to play with all the weapons, vehicles, planes and helicopters.
After spending a day or two messing around in the Armory and Showcases, and then completing most of the Scenarios, I went back to the Campaign and found it to be alot funner and easier than when I had first played it. I cannot stress this enough for people who didn't like this game. Go spend a few days in the Armory and Showcases and do a few scenarios before you even attempt the Campaign.
The bottom line is: You have to devote your undivided gaming time to this title if you want to get anywhere. There are alot of commands and keys to remember. Your not going to just jump into this game and complete missions if you don't take the time to really learn how to use all the different vehicles and commands. But once you do and you get comfortable, it's fun as hell and is definately in my top 5 FPS ever.