Historical events and story events preceded by "c." are approximations based on given information and are not to be considered exact dates, and may be subject to change as new information is given.
|743|| Titans appear across the world for the first time in history, beginning a mass slaughter of the human race.
Through unknown means, countless Colossal Titans are gathered together to form three massive barriers by hardening their skin. The surviving remnants of humanity escape to these three barriers, the Walls Maria, Rose, and Sina. Evidently, some human settlements survive beyond the Walls.
|c.780||A homeless girl from beyond the Walls is given the name "Ymir" by the leader of a cult, the "Subjects of Ymir." The girl joins the cult and becomes a figure of worship.|
|784||A miner attempts to dig beneath Wall Sina to enter the interior, but after digging for some time he discovers an area below the ground where the Walls jut outward. After discussing his findings with a friend, the miner mysteriously disappears, and his friend disappears as well soon afterward.|
|c.785||The Subjects of Ymir are found by the authorities. They are led to the top of a wall, where they are all turned into mindless Titans wandering the wilderness.|
|c.830||Grisha Jaeger cures a devastating plague in Shiganshina District.|
|835||Mikasa Ackermann is born to her father and mother, the latter being the last member of the Oriental clan.|
|844|| Nicholas Lovof tasks Levi, Furlan Church, and Isabel Magnolia to find incriminating files on Lovof's business with Lang Company and to kill Erwin Smith, who carries the files. Erwin Smith encounters Levi in the Underground and offers to pardon his crimes if he joins the Scout Regiment.
Commander Keith Sadies decides to implement Erwin Smith's scouting formation into the 23rd Exterior Scouting Mission. On this expedition, Furlan and Isabel are killed by an abnormal Titan. Erwin convinces Levi to fight for the Scout Regiment after Levi nearly takes Erwin's life.
In her home, Mikasa Ackermann is abducted by bandits after her parents are killed. She is rescued by Eren Jaeger, who kills two of the traffickers. Mikasa manages to kill the third in a moment of fury. She is later taken in to the Jaeger family.
|845:|| Grisha Jaeger travels to the Interior, but not before promising to show his son Eren the secret within his basement when he returns.
A settlement beyond the Walls sends out four of their Warriors, Bertholdt Hoover, Reiner Braun, Annie Leonhart, and Marcel to destroy humanity and retrieve the "Coordinate." Marcel is eaten by Ymir's Titan, and Ymir regains her humanity.
The Colossal Titan breaches the outer gate of Shiganshina District, destroying the century-long peace within the Walls as Titans begin to enter the city. Carla Jaeger is eaten by a smiling Titan. Reiner as the Armored Titan breaches the inner gate, forcing humanity to retreat to Wall Rose.
The Reiss family proposes killing off Historia, an illegitimate child of the head of the family, to clear up the matter of inheritance. It is instead decided that she will live a humble life under the new name "Christa Lenz" in the Cadet Corps. Ymir overhears this news in a conversation between priests in the Order of the Walls, and she begins a search for Christa.
|846||The royal government enacts a culling in the form of a Wall Maria reclamation operation, sending out 250,000 civilian troops, around twenty percent of the surviving human population. Less than two hundred return alive.|
|847||The 104th Cadet Corps begins.|
|848||During a wilderness training exercise, Christa Lenz is nearly captured by bandits. The cadets team up to take down her captors, and they successfully rescue Christa.|
|849|| On the 34th Exterior Scouting Mission, Ilse Langnar encounters a Titan who speaks of the "Subjects of Ymir" and "Lady Ymir." She attempts to communicate with the Titan but is eventually eaten.
In order to settle an argument among cadets Jean Kirschtein and Sasha Braus, Garrison Commander Dot Pyxis hosts a cook-off. Sasha presents cooked meat while Jean presents an omelette cooked by his mother, and Jean is declared the victor.
|Unknown||Eren begins taking fighting lessons from Annie.|
|Time||Event - Year 850|
|One Day Before the Struggle for Trost||The 104th Cadet Corps formally disbands after its completion.|
|Year 850:|| The Colossal Titan breaches the outer gate of Trost District, starting a Titan invasion for the first time in 5 years.
Eren Jaeger is eaten by a Titan, but emerges in his Titan form and begins to slaughter many Titans. After the evacuation of Trost is complete, Eren is taken into the custody of the Garrison.
Commander Dot Pyxis arrives in Trost and collaborates with Armin in a plan to take back Trost with Eren's Titan. Eren closes the breach with a giant boulder, saving Trost District. This marks the first time humanity has retaken land from the Titans.
|Time After the Struggle for Trost||Event - Year 850|
|1 Day||After nonstop cannon-fire, all but two Titans are eliminated from Trost District. These two Titans, later named Sawney and Beane, are taken into the Scout Regiment's custody for Hange Zoë's studies.|
|2 Days||The Garrison and Cadet Corps work to gather the bodies of fallen soldiers in the district to prevent a secondhand disaster epidemic. Jean Kirschtein finds Marco Bodt's corpse.|
|3 Days||Eren awakens from his coma in a prison cell. Erwin Smith and Levi tell Eren of what transpired after the struggle for Trost.|
|5 Days||Eren is held on trial before a military tribunal judged by Premier Dhalis Zachary. He is eventually given over to the custody of the Scout Regiment.|
|6 Days||Eren joins the Scout Regiment under the supervision of the Special Operations Squad, with whom he would later test his Titan abilities over the next month. Hange Zoë tells Eren of her experiments with Sawney and Beane.|
|7 Days||Annie kills Sawney and Beane, later presenting Marco's ODM gear at an inspection to throw off suspicion.|
|8 Days - 1 Month||Under the supervision of the Special Operations Squad, Hange experiments with Eren's Titan abilities.|
|1 Month:|| On the day before the 57th Exterior Scouting Mission, Annie distracts herself from her anxiety by searching for Carly Stratmann, the missing daughter of a Stohess merchant.
The Scout Regiment embarks on the 57th Exterior Scouting Mission, departing from Calaneth District. Annie disrupts the expedition as the Female Titan, invading the right flank of the expedition to search for Eren. Commander Erwin leads her into a Forest of Giant Trees, and successfully uses special target restraining weapons to capture her. However, using her shriek to attract Titans to her, she escapes the Scouts' capture and kills four members of the Special Operations Squad.
The Scout Regiment begins to suspect that Annie Leonhart is the Female Titan. Erwin Smith devises a plan to capture her in Stohess District.
|Time After the 57th Scouting Mission||Event - Year 850|
|1 Day||Scout Regiment recruits from the 104th Cadet Corps are sent into Wall Rose under the supervision of Miche Zacharius.|
|2 Days|| Assault on Stohess:
In Stohess District, the Scout Regiment attempts to quietly capture Annie Leonhart, but she transforms into a Titan. Eren's Titan fights Annie's Female Titan, causing great death and destruction in the district.
After failing to escape the district, Annie encases herself in a crystalline substance to avoid capture.
Invasion Sighted - Miche Zacharias sends out Tomas to warn Commander Erwin of the sighting of Titans that have inexplicably appeared within Wall Rose. Mike encounters the Beast Titan, who cripples him before leaving him to be killed by Titans.
11 Hours After Sighting - Scout Regiment teams led by Gelgar and Nanaba rest at Utgard Castle after running into each other. They are soon attacked by Titans which can move at night, forcing the Survey Corps veterans and recruits into a fight for survival throughout the night.
12 Hours After Sighting - Tomas arrives in Stohess and warns Erwin Smith, who is being questioned by the Stohess District Mayor for his actions in the Stohess District raid, of the Titan sighting.
16 Hours After Sighting - The Survey Corps members from the Stohess operation arrive in Ehrmich District en route to Utgard Castle. There, Minister Nick reveals the importance of Historia Reiss in uncovering the secret of the Walls. The Survey Corps also receive information that point to Reiner and Bertolt being in league with Annie Leonhart.
|3 Days|| 20 Hours After Sighting - The Beast Titan throws debris from Wall Rose at the Survey Corps at Utgard, killing two veterans, and summons more Titans to attack Utgard before leaving Wall Rose. Ymir transforms into a Titan to protect the remaining recruits at Utgard.
The Stohess operatives arrive at Utgard shortly after the break of dawn, saving the recruits at Utgard. Christa Lenz reveals her true identity as Historia Reiss.
28 Hours After Sighting - The Scout Regiment meet up with Hannes' Garrison squad at the top of Wall Rose, who reveals that there was no breach in Wall Rose.
Reiner Braun and Bertholdt Hoover reveal their Titan identities and mission to Eren Jaeger and subsequently assume their Titan forms as the Armored and Colossal Titans. A battle ensues on Wall Rose. Eren and Ymir are captured by Reiner and Bertholdt, who escape to a Forest of Giant Trees.
Five hours after the battle on Wall Rose, Commander Erwin reunites with the Scouts. They set out to rescue Eren and Ymir. Reiner and Bertholdt attempt to flee to Wall Maria, but are intercepted by the Survey Corps, who manage to rescue Eren from their grasp.
The Smiling Titan appears in front of Eren and Mikasa for the first time since the Fall of Shiganshina. Hannes attacks the Titan, but is killed in front of Eren. Eren unleashes the power of the Coordinate unknowingly after striking the Smiling Titan's hand. Using this power, Eren commands nearby Titans to devour the Smiling Titan and attack Reiner and Bertholdt.
The surviving soldiers of the operation retreat to Wall Rose, while Reiner and Bertholdt retreat to Shiganshina District with Ymir.
|4-10 Days|| Refugees from Wall Rose are sent to the underground city.
Wall Rose is declared Titan-free. Refugees from the underground are sent back to their homes after anarchy nearly breaks out.
Several recruits from the 104th Trainee Corps are assigned to the new Special Operations Squad to safeguard Eren and Historia.
|10 Days|| Erwin recovers from his injuries and is informed of the events that transpired during the past week.
The Beast Titan arrives in Shiganshina District.
|Unknown||Levi encounters Kenny, an old adversary, and the two battle in Trost District.|