Once again you can experience the WWii battlefield, in Call of Duty 2. This sequel adds a new game engine, which provides improved visuals, AI, and weather effects. You can employ real squad tactics as you make your way through four distinct campaigns, each following a single soldier as he battles through historic conflicts. Call of Duty 2 also features maps that feature multiple paths to follow, offering a variety of cover and opportunities to use team tactics. Multiplayer modes return as well, allowing you to test your skills online against other players. Computer-controlled teammates act and react individually, and the game’s contextual “battle chatter” system lets players know exactly what’s on their minds. Enemy squads are likely to have learned a few new tricks as well.