If you are looking for the Community Timeline, Call of Duty Wiki:Community Timeline
Various events occur in the Call of Duty universe. Also the events that happen in each game can be organized together in the following categories:
World War 2 Timeline
A timeline of events in the "World War 2 Timeline". It features events from Call of Duty series from January 1st, 1897 until September 2nd, 1945 from the games Call of Duty, Call of Duty: United Offensive, Call of Duty: Finest Hour, Call of Duty 2, Call of Duty 2: Big Red One, Call of Duty 3, Call of Duty: Roads to Victory, Call of Duty: World at War: Final Fronts, Call of Duty: World at War (Nintendo DS) and Call of Duty: WWII. Unlike the rest of the timelines, the events of this timeline are largely based on real events.
Modern Warfare Timeline
A timeline of events in the "Modern Warfare universe". It features events from the Call of Duty series from October 25th, 1917 until January 21st, 2017 from the games Call of Duty 4: Modern Warfare (Remastered), Call of Duty: Modern Warfare 2, and Call of Duty: Modern Warfare 3. It also features events from the Expanded Universe items Modern Warfare 2: Ghost, Find Makarov: Operation Kingfish and Soap's Journal. It included the events of Call of Duty 4: Modern Warfare (Nintendo DS), and Call of Duty: Modern Warfare: Mobilized.
Black Ops Timeline
A timeline of events in the "Black Ops Timeline". It features events from Call of Duty series from 1894 until 2070 from the games Call of Duty: World at War, Call of Duty: Black Ops, Call of Duty: Black Ops: Declassified, Call of Duty: Black Ops II, Call of Duty: Black Ops III, Call of Duty: Black Ops 4, Call of Duty: Black Ops Cold War and Call of Duty: Black Ops 6. It also included the events of Call of Duty: Black Ops (Nintendo DS).
Treyarch Zombies Timeline (Aether)
A timeline of events in the "Treyarch's Zombies". It features events from the Call of Duty series from 5 AD until an unknown date from the zombies mode in the games Call of Duty: World at War, Call of Duty: Black Ops, Call of Duty: Black Ops II, Call of Duty: Black Ops III, Call of Duty: Black Ops 4, and the Call of Duty: Zombies comic books.
Treyarch Zombies Timeline (Dark Aether)
A timeline of events in the "Treyarch's Zombies" Dark Aether story. It features events from the Call of Duty series from the middle ages until 2021 from the zombies mode in the games Call of Duty: Black Ops Cold War, Call of Duty: Vanguard, Call of Duty: Modern Warfare III, and Call of Duty: Black Ops 6.
Treyarch Zombies Timeline (Chaos)
A timeline of events in the "Treyarch's Zombies" Chaos story. It features events from the Call of Duty series from ancient times until 1912 from the zombies mode in the game Call of Duty: Black Ops 4.
Ghosts Timeline
A timeline of events in the "Ghosts universe". It features events from the Call of Duty series from March 6th, 1974 until July 5th, 2027 from Call of Duty: Ghosts.
Extinction Timeline
A timeline of events in the "Extinction Timeline". It features events from the Call of Duty series from the extinction mode in the game Call of Duty: Ghosts from the Paleozoic Era until February 24th, 2018.
Advanced Warfare Timeline
A timeline of events in the "Advanced Warfare universe". It features events from the Call of Duty series from 1994 until January 8th, 2061 from Call of Duty: Advanced Warfare.
Exo Zombies Timeline
A timeline of events of the "Advanced Warfare universe". It features events from the Call of Duty series from before November 23th, 2054 until November 25th, 2054 from Call of Duty: Advanced Warfare.
Nightmares Timeline
A timeline of events in the "Nightmares universe". It features events from 1894 until 2075 from the games Call of Duty: World at War, Call of Duty: Black Ops, Call of Duty: Black Ops (DS), Call of Duty: Black Ops: Declassified, Call of Duty: Black Ops II, Call of Duty: Strike Team and the Nightmares mode from Call of Duty: Black Ops III.
Infinite Warfare Timeline
A timeline of events of the "Infinite Warfare universe". It features events from the Call of Duty series from December 17th, 1903 until May 8th, 31 ASW from Call of Duty: Infinite Warfare.
Infinite Warfare Zombies Timeline
A timeline of events of the "Infinite Warfare Zombies universe". It features events from the 1950s through 2206, in the game Call of Duty: Infinite Warfare.
Nazi Zombies Timeline
A timeline of events in the "Nazi Zombies universe". It features events from Call of Duty: WWII from 1122 until an unknown date from the Nazi Zombies mode.
Modern Warfare Reboot Timeline
A timeline of events in the "Modern Warfare Reboot Universe". It features events from the Call of Duty series from the 1970s until December 6th, 2023 from the game Call of Duty: Modern Warfare, Call of Duty: Modern Warfare II, Call of Duty: Warzone 2.0 and Call of Duty: Modern Warfare III.
Mobile Timeline
A timeline of events in the "Mobile Universe". It features events from the Call of Duty series from the Battle Pass comics featured in Call of Duty: Mobile.
Vanguard Timeline
A timeline of events in the "Vanguard Universe." It features events from October 21st, 1900 until May, 1945 from the Call of Duty series from the game Call of Duty: Vanguard.