Warp Zoned writes:
"Publisher Activision and developer Infinity Ward quietly released the original Call of Duty in 2003, and its World War II setting was designed to compete directly with the popular Medal of Honor series. Not so coincidentally, the majority of Infinity Ward’s employees, including founders Jason West and Vince Zampella, had previously worked at 2015 Inc., the developer behind Medal of Honor: Allied Assault.
Call of Duty received a raft of good reviews, as well as several industry awards (“Game of the Year” at the DICE Awards and “Best Debut” at the GDC Awards). And due to its strong sales, Infinity Ward immediately went to work on an expansion and a full-fledged sequel, and Activision tasked Treyarch with producing several console-centric spinoffs. But to become a world-beating juggernaut, the franchise had to abandon its Greatest Generation roots and embrace a more modern sensibility in 2007’s Call of Duty 4: Modern Warfare."