How do I get the Russian tanks?
I started playing with the Germans, but I would like to play the Russians.
The game says I have to play 9 games.
What kind of games is the game referring to? Do I have to win the games or can I leave the game early?
You need to play 9 games all the way through. I'm not 100% certain but I don't think it counts toward the games if you leave early. You could always give it a shot though :P
When you start WT, you can choose your first nation. You have to make some progress to unlock other nations. It is the same with airplanes. By the game, it means matches.