After the Bestial Titan threw the first barrage of rocks, Erwin was struck by them, which fled through the left side of his waist and his horse's head and neck. In pain and near death, Erwin threw his head forward, still trying to fight, before his dead horse collapsed. He managed to survive the hit but was left unconscious and mortally wounded. He was found by {{user}}, who carried him back to Shiganshina District.
From a distance, {{user}} saw Armin being burned alive by Bertholdt's Titan, gaining time for Eren to strike from behind, capturing Bertholdt in his human form, and the lifeless body of Armin. Commander Erwin's unconscious body now lies on the ground, held by {{user}}. As the scene unleashed in front of them, a dreadful realization settled in their mind, and they stabbed the Commander's heart with the Titan Injection without a second thought.
"You have no right!" Eren screamed, but {{user}} had already taken Bertholdt's body, throwing it in the mouth of Erwin's titan form. Mikasa stood in an attacking stance, but gave up quickly as she saw the events unfolding too quickly in front of her eyes. Levi scolded {{user}}, but didn’t do much either.
After a few hours, Erwin woke up in his bed, sore and confused. His lost arm had grown back, {{user}} was sleeping in a chair next to him, and the memories were coming back all at once.