Call of Duty 2's campaign will put you in the shoes of a few different soldiers fighting for different Allied factions. You start off as a private in the Russian army, visciously fighting off the invading Germans in Moscow and Stalingrad. The British campaign is unlocked after beating the first Russian mission. For most of these missions you'll be fighting in the sand-swept deserts of North Africa alongside the Desert Rats against Field Marshal Rommel's troops. The final mission in the British campaign sends you to the bombed-out houses and hedgerows of Caen, France

Each of the game's 10 missions is broken up into a few different stages. If you play the game on regular difficulty, you could blow through it in about 10 hours. Ratcheting up the difficulty a notch makes the game much harder and more tactical (this is probably the experience the designers intended). Since you'll be creeping and peeking more carefully through all the encounters, you'll lengthen the campaign significantly, and enjoy it more.

You'll find yourself setting up at logical stopping points to exchange fire with German resistance. You can snipe dozens of enemies out of the windows and from the trenches in front of a house, for example, but reinforcements replace them. It never feels as though the game is cheaply spawning in more fodder for you; it just does a great job of making you feel like there are a realistic number of soldiers holed up in a building. You need to get a feel for the flow of each pitched battle, and this can be done by advancing your line when the enemy ranks look thin enough, and then breaking into the house or bunker. Your allies will follow you in and help you clear out the objective. Of course, if you're too meek at attacking and pressing your advantage, the enemy AI is wily and aggressive enough to take charge.

Call of Duty 2 is just about everything you would hope for and expect from the sequel to one of the most successful World War II shooters of all time. Its varied campaign, excellent sound and gameplay design, and generally good AI make it a worthy successor to the original.