The Soviet Assault DLC is the only addition this game has received and it was released in 2009., where you take control of the Soviet army in a short campaign which contains much fewer missions then the base game.
The Soviet Assault DLC is a pretty short experience and I think they could have done more, only 6 more story missions, without any remarkable additions to the game.
All in all, I think this DLC is not worth getting since there isn't much apart the few missions that you get. It's a good idea to see the other side of the battlefield, but if there was almost as many missions as the main game features, it would've been a proper addition to the game.
The Soviet Assault DLC is a pretty short experience and I think they could have done more, only 6 more story missions, without any remarkable additions to the game.
All in all, I think this DLC is not worth getting since there isn't much apart the few missions that you get. It's a good idea to see the other side of the battlefield, but if there was almost as many missions as the main game features, it would've been a proper addition to the game.