History Trivia / CallOfDuty

** A vast majority of ''[=CoD=]'' installments have been ported/released on the PC. However, three notable exceptions are ''3'', ''Finest Hour'', and ''Big Red One''. Mostly likely due to the fact that these are the only entries not running on the [[UsefulNotes/GameEngine IW Engine]].

** A mild example in 2015, where ''Creator/SquareEnix'' stopped publishing and localizing the series to Japanese, with [[Creator/XboxGameStudios Microsoft]] and [[Creator/SonyInteractiveEntertainment Sony]] taking over the job for the Japanese publishing to their respective consoles. The PC (and eventually, mobile) games of the series are still published by Activision themselves in Japan.

** Many critics claim that the ''[[VideoGame/CallOfDutyModernWarfare Modern Warfare]]'' series glorifies war and xenophobia. It's kind of hard to state that when the first game alone shows the horrible consequences of gung-ho military adventurism while having you teamed up with Russian Loyalists the entire time. It also seems to have even skipped a lot of ''player's'' attention that the American forces are coming to "liberate" the unnamed Middle Eastern country, with ambiguous and contradictory evidence about whether it's a genuine sentiment or a transparent power play for control of the "oil rich" Arab nation. Y'know, just like real life.

* WhyFandomCantHaveNiceThings: Tactical Insertions in online multiplayer. Originally debuting in ''Modern Warfare 2'', they were intended to allow players to choose where they would respawn after their next death. However some of the community used Tac Inserts as a way to boost for easy XP, unlockable equipment and camos, and easy killstreaks. As a result, Tac Inserts were banished to the Infected game mode in both ''[[VideoGame/CallOfDutyGhosts Ghosts]]'' and ''[[VideoGame/CallOfDutyAdvancedWarfare Advanced Warfare]]'', though this has not discouraged boosting.
* TheWikiRule: [[http://callofduty.wikia.com/wiki/Call_of_Duty_Wiki The Call of Duty Wiki]].

* NamesTheSame: There are three important characters who shared the last name Petrenko in the series (Mikhail in ''[=CoD=] 1'', Yuri in ''UO''[[labelnote:*]]Has nothing to do with the Yuri from ''[=MW3=]'' either[[/labelnote]], and Dimitri). None of them are related to each other.

* ActorAllusion: It's hard not to see any crossover between this series and the ''Series/BandOfBrothers'' cast as a deliberate allusion. This is especially noteable in ''Call of Duty 2: Big Red One'' which includes Creator/MichaelCudlitz (Bull Randleman), Frank John Hughes (Bill Guarnere), Creator/RichardSpeightJr (Skip Muck), Creator/JamesMadio (Frank Perconte), Ross [=McCall=] (Joseph Liebgott), and Rick Gomez (George Luz), which is practically a reunion tour.

* ActorAllusion: It's hard not to see any crossover between this series and the ''Series/BandOfBrothers'' cast as a deliberate allusion. This is especially noteable in ''Call of Duty 2: Big Red One'' which includes Creator/MichaelCudlitz (Bull Randleman), Frank John Hughes (Bill Guarnere), Creator/RichardSpeightJr (Skip Muck), Creator/JamesMadio (Frank Perconte), Ross [[=McCall=]] (Joseph Liebgott), and Rick Gomez (George Luz), which is practically a reunion tour.

* ChannelHop: [[Creator/XboxGameStudios Microsoft]] announced their intention to acquire Creator/ActivisionBlizzard in January 2022, which was reportedly mere weeks after the latter had signed an agreement with [[Creator/SonyInteractiveEntertainment Sony]] for [=PlayStation=] to receive preferential treatment when it comes to ''Call of Duty'' updates and marketing for at least the next three entries. The current understanding is that this agreement will be honored, but what happens after that is unknown.

** Inversely, the original ''Call of Duty'' was exclusive to PC until the release of "Call of Duty Classic" with the Hardened Edition of ''Modern Warfare 2'', and its ExpansionPack ''United Offensive'' remains a PC exclusive two decades on.

* NoPortForYou: A vast majority of ''[=CoD=]'' installments have been ported/released on the PC. However, three notable exceptions are ''3'', ''Finest Hour'', and ''Big Red One''. Mostly likely due to the fact that these are the only entries not running on the [[UsefulNotes/GameEngine IW Engine]].

* NoPortForYou: A vast majority of ''[=CoD=]'' installments have been ported/released on the PC. However, three notable exceptions are ''3'', ''Finest Hour'', and ''Big Red One''.

* BeamMeUpScotty: ''Call of Duty'' games often use the quote "only the dead have seen the end of war," attributing it to Plato.

** The people who say the ''[[VideoGame/CallOfDutyModernWarfare Modern Warfare]]'' series glorifies war and xenophobia. It's kind of hard to state that when the first game alone shows the horrible consequences of gung-ho military adventurism while having you teamed up with Russian Loyalists the entire time. It also seems to have even skipped a lot of ''player's'' attention that the American forces are coming to "liberate" the unnamed Middle Eastern country, with ambiguous and contradictory evidence about whether it's a genuine sentiment or a transparent power play for control of the "oil rich" Arab nation. Y'know, just like real life.

* NoPortForYou: A vast majority of ''[=CoD=]'' installments have been ported/released on the PC. However, two notable exceptions are ''3'' and ''The Big Red One''.