A stunning in-game trailer for Activision's upcoming Call of Duty 4: Modern Warfare has just been released.

Call of Duty 4 is finally leaving the WWII era and taking focus on a new modern-day war. This is the first footage of the game, and shows players doing battle in what appears to be a middle-east setting in chaotic gun fights with enemy forces.

By the looks of it, helicopters will also play a significant roll in the game, with one scene showing them spotting enemies in a the night using night-vision technology.

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