From Strategyinformer.com: "Times were simpler in 2003. No kill streaks, experience points or Call of Duty Elite. It was just the rolling hills of virtual France, some gruff soldiers and a LAN connection. Activision could only dream of what its new First Person Shooter franchise would become.
At the time Infinity Ward was an unknown name - all it was famous for was for being a collection of petulant developers who dared to break away from leading series, Medal of Honor. No-one really knew if Call of Duty would survive, but judging by the bombastic opening of earlier rival Medal of Honor: Allied Assault, it was likely it would."