Well, I did see Pyro in their the other day as well:)
I have put rounds into friendly tanks with no appearent effect.
While WW2 is visualy stuning, and the Tanks and Planes are modeled very well, the attention to detail in the cockpits and tanks is very impresive. The plane flight model is cheasy to say the least, they may look good but AH is way bettter form the flight sim aspect. Tank wise I think WW2 kiks it's but.
The best WW2 sim would be AH planes and WW2 onlines ground war melded to gether.
When I do play Ww2 it is primarly for the ground war aspect.