For those seeking a break from run-and-gun WWII games, this is it.
What you need to know:
All weapons are based on iron sight aiming. This means that your average Counter-Strike, Day of Defeat, or Battlefield player will be unconfortable at first. You're not running around, spraying your MG fire in hopes that you might hit freshly respawned troops.
The game requires teamwork. This is both a plus and minus. Tanks require two people, for example. Your typical rambo styled player will find it difficult to play the game unless their objectives are more focussed to that of the team's needs.
Game play is a bit slower then most WWII shooters out there. While it's not too slow as to cause a player to go insane, the speed of the game allows that much more time in order to coordinate ( if need be) with other teammates. If you're used to Call of Duty's S&D or even Counter-Strike's gameplay, then the adjustment won't be too far off.
One shot can kill you. This is why it is important to throw away old habbits of running back and forth in order to score. While it can be frustrating, much like America's Army, there's still plenty to work with.
If you're using a high-end gaming system and you're used to the eye candy which Half-Life 2 has to offer, then you might be disapointed. While graphics should never truely judge a game's playability or fun factor, they might scare away the high-end gamer.
One quick note: The one aspect which I love relates to tanks and the required teammate. While Battlefield and Call of Duty: United Offense may have created a system which allows a single person to control said vehicles, the added requirement(s) seem to increase immersion and of course strategy.