Erwin Smith

Perched in the trees at the forest's edge, Survey Corps soldiers piece together the expedition's real purpose while a Titan clumsily tries to climb toward them. Watching it, Armin suspects the creatures can learn. He and Jean agree the mission was built to bait and trap the Female Titan, and Armin pushes further: Eren's existence implies other human shifters exist, and the ones who broke the Walls may be living inside the cities, making their identification humanity's first priority. He recalls how the assault five years ago stopped halfway and how little opposition met Eren when he sealed the breach at Trost, concluding that the enemy's aims shifted once Eren's transformation became public. Jean grasps the implication, that a spy stood among the witnesses that day, yet still argues the secrecy cost lives, pointing to his squad leader Ness.

Deep in the forest, Eren works through the same puzzle with Squad Levi, stung that even the captain's own soldiers were kept in the dark. Eld reasons that only veterans of the fall five years ago were trusted, and Petra and Eren remember Erwin's strange question about what they see and who the enemy is, wondering whether it doubled as a screening test. Oluo boasts he had the answer all along and simply kept quiet.

Armin defends the commander: hindsight makes choices look obvious, but no one knows outcomes in advance, and Erwin had to weigh a hundred soldiers against every life behind the Walls. Men like Pixis, Ian Dietrich, and Zackly cross his mind as the same breed. From opposite ends of the forest, he and Eld arrive at one grim conclusion: remaking the world demands people willing to shed their humanity, and whoever cannot discard anything will alter nothing.

At the capture site, Hange drives extra spikes into the immobilized Female Titan's joints while Levi and Mike attempt to carve through her hands and into her nape, only for their blades to shatter on hardened skin. Erwin likens it to the reported Armored Titan but observes she cannot maintain the effect the same way, and orders explosives set to sever her hands at the wrists. Standing on her head, Levi savors the moment, promising suffering in return for his slaughtered subordinates and asking whether her true body can manage without hands or feet. Her answer is a scream that rolls across the forest. Every Titan in range abandons the soldiers, sprinting past easy prey to converge on her. The Corps intercepts and Levi cuts down two, but the swarm breaks through and eats the Female Titan alive. Once her head is ripped away, Erwin orders withdrawal, stunned that she would destroy herself sooner than surrender what she knows.

Armin deduces that human shifters brought down the Walls, that they likely live among the population, and that a spy witnessed Eren's transformation at Trost.

The restraining operation succeeds in pinning the Female Titan, but her hardened skin defeats every blade and pushes Erwin toward explosive amputation.

Her scream summons ordinary Titans to consume her body, destroying the Survey Corps' prize and forcing a retreat.

The chapter's bonus page details the special target restraining weapon: wagons that look like ordinary barrel transports, each barrel hiding seven iron tubes that fire wired arrowheads in opposite directions, tethering a Titan to tree trunks with hundreds of high-tension lines. The text adds that the weapon's enormous development cost tied the Survey Corps' continued existence to this mission delivering results.

Named for the commander whose judgment it examines, the chapter opens volume 7 as the 27th overall, released in Japan in November 2011 during the Female Titan arc. The anime adapts it in Erwin Smith: The 57th Exterior Scouting Mission, Part 4, and Armin's line about throwing things away supplies its defining quote.