I played BE for 2 years and still do from time to time, its a different beast of FPS...its a total war sim, as in: no kill messages, limited supply at towns, in game ranking system (private, corporal, ect) and so on and so forth
The tank battles are the best you will ever incounter (sorry AH they have you beat in that department).
The air battles are a flop, if your computer can handle it, its definantly worth it...however if your computer isn't up to date it will be a slideshow.
The navy battles are, eh, realistic, and fun when.. (if) you find the enemy.
the FPS part of the game is great, teamwork IS A MUST if you want to survive, and its really the only to have any fun without dieing quickly.
Its very realistic, and a total sim all around, be prepared for long battles, lots of dieing, lots of waiting, and lots of fun.
check out my youtube channel:
http://www.youtube.com/user/1epic1it has a music video for the air part and a short tutorial on infantry and also dive bombing
plan to add more videos in the future, also youtube Battle Ground Europe and watch other videos.