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Call of Duty - Call of Duty 4: Modern Warfare: Callsigns, Call of Duty 4: Achievements, Call of Duty 4: Modern Warfare Attachments, Call of Duty 4: M book by Source: Wikia: 9781234760038
![COD]So now that Infinity Ward, Treyarch, and Sledgehammer are all working on a connected universe, here's what games are canon to the timeline so far : r/CallOfDuty COD]So now that Infinity Ward, Treyarch, and Sledgehammer are all working on a connected universe, here's what games are canon to the timeline so far : r/CallOfDuty](https://i.redd.it/2x4pi3gsm2w81.jpg)
COD]So now that Infinity Ward, Treyarch, and Sledgehammer are all working on a connected universe, here's what games are canon to the timeline so far : r/CallOfDuty
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