Call of Duty 4 Modern WarfareCall of Duty 4: Modern Warfare arms gamers with an arsenal of advanced and powerful modern day firepower and transports them to the most treacherous hotspots around the globe to take on a rogue enemy group threatening the world. As both a U. S. Marine and British S. A. S. soldier fighting through an unfolding story full of twists and turns, players use sophisticated technology, superior firepower and coordinated land and air strikes on a battlefield