From: Toledo, Spain
Axis always to start with, if/once i get tired or want a different challenge, i will try Russia.
I might be totally wrong and going a bit off topic, but for what i have seen in different hardcore WWII games, i have the feeling that most of grognards (specially Europeans like me) feel attracted by the Axis innovative strategies, equipment, military discipline, leaders (i mean military ones, not Hitler) and war domination at least early in the war.
On the other hand, there are plenty of USA grognards that prefer to play with USA if available, as i guess they feel more identified with their own country.
It was that way for sure when i used to play WWII Online.
About Russia... they are the red evil, who would wan to play with them? (joking on this one).