Call of Duty: United Offensive is the expansion pack for the WWII first person shooter Call of Duty. It features the addition of vehicles, a new campaign, new weapons and several new multiplayer maps. The game features three sub-campaigns, like the original Call of Duty. The Americans take on the Battle of the Buldge, the British take to the air and to the island of Sicily, and the USSR take on Kursk and Kharkov.
All original weapons are still here, but several new ones have been added to the arsenal. The game also includes the use of tanks and jeeps, and new ways to defeat them such as the bazooka and satchel charge. This changes tactics completely in single player as well as multi-player.