Chronology
Attack on Titan Historical Timeline
Chronological events in the history of humanity within the Walls up to your active milestone (Episodes 1–2). Future events are hidden to eliminate all spoilers.
Year 845
Year 845: Fall of Wall Maria
The Colossal Titan breaches Shiganshina's outer gate followed by the Armored Titan piercing Wall Maria's inner gate. Humanity loses a third of its territory, forcing hundreds of thousands of refugees into Wall Rose.