Gray Matter Studios (the Return to Castle Wolfenstein developers) are working on United Offensive, an expansion pack for Call of Duty, the WWII FPS created by Infinity Ward. United Offensive will offer three separate single player campaigns (Battle of the Bulge for the US side, the Battle of Kursk for the Russian side and an unnamed battle for the British side) and it is scheduled for release this Fall. Thanks: Homelan.

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