Battle of Shiganshina District

The was a conflict between the Survey Corps and the warriors of Marley within the ruins of Shiganshina District, in which Wall Maria was reclaimed five years after its fall and the truth of the outside world was discovered in the basement of Grisha Yeager's home.

Aftermath
The battle ended, with the Survey Cops successfu in the retrieving one of the warrior's titan shifting powers, which is of the Colossal Titan. Arman is the possessor of the power of the above titan shifter. Only 9 members of the Scout survived. Sasha, Jean, Connie, Armin and Floch were told to stay on the wall, and Hange, Eren Levi and Mikasa went to Grisha's basement. They discovered the three books of Grisha Yeager which explained the history of the world and the titans. They explained the conflicts between the Marley and Eldian races.