The U.S. campaign is in the Pacific Ocean, the islands of Makin, Peleliu and Okinawa. The Russian campaign in the eastern front, particularly in Nazi Germany. In U.S. campaign, players assume the role of Pvt. Miller, who fought with Sgt. Sullivan, Cpl. Roebuck, (later Sergeant) and Pvt. Polonsky. During the Soviet campaign, players assume the role of Pvt. Dimitri Petrenko, as it struggles with a tough sergeant. Reznov and merciful Pvt. Chernov. In U.S. campaign, players battle against the Imperial Japanese Army, who is known for the famous Banzai charge players when they are less expected. Most of the fighting takes place in the jungle with ancient ruins, statues, temples and shrines throughout the region. The fight is just a small farm with a strong mortar loaded on the drive. Tanks of all sizes are also common in the U.S. campaign, usually in a fire some Japanese machines. In the Russian campaign, players battle against the German Wehrmacht in the Battle of Berlin. Combat is often damaged the ruins of Berlin in 1945, which means almost mid-range combat. Players often struggle indoors, where they can dominate the shotgun, otherwise the vast hall, and there is much cover to hide behind while reloading. Fighting is also a large office rural villages to fight with the armored forces, which are all areas to address long-term close-up sniping from room to room. The last shipment of the game takes place in the Russian campaign, and to see the Russian army occupied the Reichstag (German parliament) and the proliferation of Soviet flag on the roof of the building. The campaign starts at Stalingrad. German troops attack Soviet troops rushed to the ground. Two soldiers, Sergeant and Dimitri Petrenko Reznov survive an attack without being detected and seen the death of their partners, but Reznov hand is injured and can not shoot. Finally, they discovered, but with the support of newly arrived Soviet support, Petrenko finishes the work of the General Amsel murder arrest before jumping into a nearby canal. Three years later, Petrenko trapped instead of several Nazis in a house. Just as it is on the verge of killing, has obtained a T-34 blows a hole in the house and killing everyone inside, except Petrenko, who is now Reznov. From there, it raided a German camp in charge of armored cars and burning everything as they go. Where do the rest, Reznov is an inspirational speech, and they board a T-34, which faces the destruction of all German and AA batteries for the station. From there, take the train to Berlin to win. The train arrives in Berlin, and immediately after the descent, is already in a shootout. The soldiers, after the battle by a large building under fire from the T-34S, storms asylum, and finally received, hunt and kill the retreating German soldiers. The Soviets in a control room in the hall and, finally, through the streets. Reznov unit to continue their struggle in the subway, and kill as a last attempt by the Germans, who lives near the plant, the subway flooded. Six days later, Reznov Petrenko out of the water alive. Following Chernov shouted Reznov pacifism is that the flag and said, at least be willing to die for the Soviet Russia. The control unit in various houses, and eventually made an advance towards the goal of the Reichstag. After the destruction of all anti-aircraft 88 and the path to the doors of the Reichstag, Chernov is attacked with flamethrowers and Reznov still be nice to him. He takes it and reads the diary. When the Soviets were in power, will immediately begin to struggle in the dugout of German soldiers and SS in the lobby, which still, they met strong resistance in the theater, so does Reznov Petrenko up and support it in a 41st-PTRS When you go on the roof, making the Germans a year, the Soviets were forced by violent resistance. The national carrier is killed, thus increasing Pentrenko. When available, get a German and shoots him with a Walther P-38 before Reznov spears, cut, then the Nazi flag and Dimitri rally at a point where he can put the Russian flag, said: As long as you live The heart of the army can never be broken. From that moment in Berlin by the Soviets, as the Soviet national anthem plays in the covered background.