World War II rages on in Call of Duty: United Offensive, which features new single-player campaigns, enhanced multiplayer modes, and more intense action. This chapter in the Call of Duty series once again puts you in the role of American, British, and Russian soldiers as they battle across Europe's historic battlefields. New features include weather and pyrotechnic effects, character abilities, and weapons. As part of the Axis or Allied powers, you can compete against other players over the Internet in a variety of multiplayer modes and maps.