A timeline of all events from the Attack on Titan anime.
|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.|
|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 afterwards.|
|c.830||Grisha Jaeger cures a devastating plague in Shiganshina District.|
|835||Mikasa Ackermann is born to Mr. and Mrs. Ackermann, 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 finally 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 human traffickers 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, promising to show his son Eren the secret within his basement upon his return.
A settlement beyond the Walls sends out four of their warriors, Bertholdt Hoover, Reiner Braun, Annie Leonhart, and fourth warrior to destroy humanity. The fourth warrior is eaten by a Titan, secretly a girl named Ymir, before the attack can begin.
Bertholdt as the Colossal Titan breaches the outer gate of Shiganshina District, allowing Titans supposedly drawn in by Annie as the Female Titan to enter into the city and starting the fall of Wall Maria. Carla Jaeger is eaten by a smiling Titan. Reiner as the Armored Titan breaches the inner gate. Humanity is forced to retreat to Wall Rose. Eren Jaeger vows to exterminate the Titans.
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 a new name in the Cadet Corps. Ymir overhears this conversation and begins a search for "Historia".
|846||The central government enacts a culling in the form of a Wall Maria reclamation expedition. Nearly 20% of the human population perishes.|
|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.
|Time||Event - Year 850|
|Unknown||Eren begins taking fighting lessons from Annie.|
|One Day Before the Struggle for Trost||The 104th Cadet Corps formally disbands after its completion.|
|The Struggle for Trost|| The Scout Regiment's 56th Exterior Scouting Mission sets out in the early morning. Bertholdt breaches the outer gate of Trost District and Titans enter the city. Eren Jaeger is eaten by a Titan, but emerges in his Titan form and begins to slaughter many Titans. Evacuation of the city is temporarily stopped due to a merchant's shipments, but Mikasa Ackermann persuades him to allow civilians through the inner gate first. Cadet evacuation becomes difficult as the supply depot of gas is overrun by Titans, but with the help of Eren's Titan the depot is retaken and cadets evacuate. Eren emerges from his exhausted Titan and is taken into the custody of the Garrison. The Garrison technical crew creates a harpoon net to temporarily cluster the Titans around the north gate of the district, lessening casualties.
Armin Arlelt vouches for Eren's life to Garrison Captain Kitz Woermann. Commander Dot Pyxis arrives in Trost and collaborates with Armin in a plan to take back Trost with Eren's Titan. After announcing the operation plan to the soldiers of Trost, Eren accompanied by the Garrison elite soldiers travels to a boulder within the district in order to seal the breach.
Eren's Titan temporarily loses control and incapacitates itself, but is revived when Armin speaks to Eren directly through the nape. Using the boulder, Eren closes the breach and Trost District is saved. Eren's overuse of his Titan leaves him in a coma. The Scout Regiment returns to the district in the late afternoon and aids in retaking the city.
|Time After the Battle of Trost||Event - Year 850|
|One Day||After nonstop cannon-fire, all but two Titans are eliminated from Trost District. The remaining two, later named Sawney and Beane, are taken into the Scout Regiment's custody for Hange Zoë's studies.|
|Two 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.|
|Three Days||Eren awakens from his coma. Erwin Smith and Levi tell Eren of what transpired after the struggle for Trost.|
|Five 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.|
|Six 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.|
|Seven Days||Annie kills Sawney and Beane, later presenting Marco's ODM gear at an inspection to throw off suspicion.|
|Eight Days - One Month||Under the supervision of the Special Operations Squad, Hange experiments with Eren's Titan abilities.|
|One Month|| The Scout Regiment embarks on the 57th Exterior Scouting Mission out of Calaneth District. Annie disrupts the expedition as the Female Titan, invading the right flank of the expedition to search for Eren. After finding Armin and sparing his life, Armin, Reiner, and Jean attack her to stall for time on Eren's behalf, but Reiner secretly informs her of Eren's true location in the expedition formation.. She is nearly captured when Commander Erwin leads the Scouts into a Forest of Giant Trees with special target restraining weapons on standby. Using her shriek to attract Titans to her, she escapes the Scouts' capture and kills four members of the Special Operations Squad. Eren Jaeger battles her in the Forest of Giant Trees and is defeated, but he is rescued by Mikasa Ackermann and Captain Levi. The Scout Regiment retreats to Calaneth District and are ordered to surrender Eren to the capital.
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|
|One Day||Scout Regiment recruits from the 104th Cadet Corps are sent into Wall Rose under the supervision of Miche Zacharius.|
|Two Days|| Invasion Sighted - Miche Zacharias sends out Tomas to warn Commander Erwin of the sighting of Titans that have inexplicably appeared within Wall Rose. He orders the Scout Regiment members under his command to warn the residents of Wall Rose. Mike encounters the Beast Titan, who speaks to him for a moment before he is killed by Titans.
Unknown Time After Sighting - In Stohess District, the Scout Regiment attempts to quietly capture Annie Leonhart, but she transforms into a Titan. Eren is unable to find the will to transform, and the Scouts battle the Female Titan until Eren is able to transform. Eren's Titan fights Annie's Female Titan, causing great death destruction in the district. After failing to escape the district, Annie encases herself in a crystalline substance to avoid capture. Wall Sina is damaged in the battle, revealing a Titan in the Wall. Erwin Smith is brought before the Stohess District Mayor to answer for his actions. Pastor Nick is interrogated by Hange Zoë after the Wall Titan is concealed before the sunlight can hit it.
Eight Hours After Sighting - Commander Pyxis is informed in Trost District of the Titan sighting.
Nine Hours After Sighting - Gelgar's south team arrives at Ragako, discovering the town is in ruins but is inexplicably absent of corpses or blood. Conny Springer finds an emaciated Titan on top of his house, who welcomes him home.
Eleven Hours After Sighting - Scout Regiment teams led by Gelgar and Nanaba rest at Utgard Castle after running into each other, neither team having found any breach in the Wall. Titans arrive at the scene soon afterwards. The Beast Titan passes by Utgard as it heads towards Wall Rose. The Scout Regiment veterans and recruits cooperate in dispatching as many Titans as possible throughout the night.
Twelve Hours After Sighting - Erwin Smith is questioned by the Stohess District Mayor for his actions. After the meeting, Tomas arrives in Stohess and warns Erwin Smith of the Titan sighting. Scout Regiment members from the Stohess operation set out for Ehrmich District.
Sixteen Hours After Sighting - The Stohess operatives arrive in Ehrmich District, bringing Pastor Nick along to persuade him to reveal information on the Walls. They receive information that raises suspicions among the Scouts that Reiner and Bertholdt are in league with Annie Leonhart.
Seventeen Hours After Sighting - The Stohess operatives head to Utgard Castle to begin their search for a breach.
|Three Days|| Twenty Hours After Sighting - The Beast Titan leaves Wall Rose as the Scouts at Utgard continues to battle with the Titans. After all the older soldiers are killed, Ymir transforms into a Titan to save the remaining recruits at Utgard. The Stohess operatives arrive at Utgard shortly after the break of dawn, and Christa Lenz reveals her true identity as Historia Reiss.
Twenty-eight Hours After Sighting - The Scout Regiment leaves the ruins of Utgard, heading to the summit of Wall Rose. They meet up with Hannes' Garrison squad, who reveals that there was no breach in Wall Rose after all. Reiner Braun and Bertholdt Hoover reveal their Titan identities and mission to Eren Jaeger. A battle ensues on Wall Rose. Eren and Ymir are captured by Reiner and Bertolt, who escape to a forest of giant trees.
Commander Erwin meets with Commander Pyxis in Trost to discuss the recent Titan invasion. The Military Police Regiment agrees to assist the Garrison and Scout Regiment in the investigation of Wall Rose. A messenger brings news to the commanders of Reiner and Bertholdt's identities as Titans.
Five hours after the battle on Wall Rose, Commander Erwin reunites with the Scouts. They set out to rescue Eren and Ymir.