Russia

The Russia or the Soviet Union was part of the Allies during World War II.

Game Info
The Russia was a playable campaign seen in all of the Call of Duty games exept inCall of Duty 3. The Russians campain was replaced by the Canadians and the Polish campaigns.

In the fourth and newest game of the Call of Duty series, Call of Duty 4: Modern Warfare seems to be the first game where Russia is one of your enemies.