Battlefield 4’s single-player Campaign takes place during the fictional “War of 2020”, six years after the events of its predecessor. Tensions between Russia and the United States have been running at a record high, due to a conflict between the two countries that has been running for the last six years.On top of this, China is also on the brink of war, as Admiral Chang, the main antagonist, plans to overthrow China’s current government. If he succeeds, Chang will have full support from the Russians, helping spark war between China and the United States.
The player controls Sgt. Daniel “Reck” Recker, second-in-command of a U.S. Marine Corps squad callsigned “Tombstone”.His squadmates include squad leader SSgt. William Dunn, Heavy Weapon Specialist SSgt. Kimble “Irish” Graves, and field medic Sgt. Clayton “Pac” Pakowski. Early in the Campaign, Tombstone is joined by CIA operative Laszlo W. Kovic, originally known as “Agent W.” from Battlefield 3’s Campaign; and Chinese Secret Service agent Huang “Hannah” Shuyi. The Campaign also sees the return of Dimitri “Dima” Mayakovsky from Battlefield 3’s Campaign—still alive after the nuclear detonation in Paris six years ago, and under the Chinese military’s custody for unknown reasons.