https://www.gamespot.com/articles/explore-the-history-of-call-of-dutys-ww2-games/1100-6454713/

The Call of Duty series has been around for 14 years now, and in that time it has grown into one of gaming's biggest franchises. Activision's marquee series began life as a comparatively humble PC-exclusive military shooter, and since then it has evolved into an annual blockbuster and spawned several popular sub-series.

This year's installment, Call of Duty: WWII, turns back the clock for the franchise in some notable ways. Activision has touted the game as a return to the series' roots, eschewing the more futuristic setting and weaponry of Black Ops III and Infinite Warfare for the familiar territory of the second World War, which served as the backdrop for the series' earliest installments.