Does Advanced Warfare Exist in its Own Universe? - Call of Duty

For the longest time, I felt like I had a grasp on the Call of Duty "timeline", but ever since Black Ops II came out, I have no idea, and AW ain't hel

Everything You Need to Know About Call of Duty: Modern Warfare II Campaign Early Access - Xbox Wire

First-Person Shooter Ideology - The Drift

How to Play the Call of Duty Games in Chronological Order - IGN

Call of Duty Zombies History, And How It Almost Didn't Happen

Call of Duty: Advanced Warfare (Video Game) - TV Tropes

Call of Duty Universe – What's the Major Difference Between Activision's Modern Warfare II and Warzone 2 Games? - EssentiallySports

Modern Warfare 3's largest Zombies offering to date has long-time fans questioning its existence

Why So Many Former Infinity Ward Devs Returned For The New Modern Warfare - Game Informer

Exo Zombies, Call of Duty Wiki

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Intel Gaming Access - It's confirmed: Black Ops and Modern Warfare are in the same, tangled Call of Duty universe

Call of Duty: Infinite Warfare - Wikipedia

Call of Duty®: Next: Call of Duty®: Modern Warfare® II Multiplayer Brings the deepest, most innovative MP experience yet