This game is awesome. I was just playing the demo and I'm really tempted to go out and buy the game now. It's like a cross between Warcraft 3 and Starcraft, but at a much faster pace than both of them. It concentrates much more on the actual combat and very little on collecting resources and building units. You can amass a huge army very quickly, and from then on it's all about positioning. You have to take high ground and take cover and use vehicles to support your infantry. This game is all about real battlefield strategy instead of just being a race to see who can build more soldiers faster. It's also absolutely gorgeous. The graphics are far superior to Warcraft 3. If you guys want to check it out, download the demo here:
http://www.3dgamers.com/games/wh40kdawnwar/ You had better have broadband.