"Those who can't abandon anything can't change anything. If there's anyone who can bring about change, it's someone capable of giving up what matters most."
Realizing she is cornered, the Female Titan lets out a unique, deafening scream that attracts every Titan in the vicinity.
This episode highlights the brutal utilitarianism that defines Erwin's leadership. As Armin Arlert famously notes during the mission:
The expedition is ultimately called off as a failure due to the high casualties and the escape of the spy. The episode ends on a tragic note as the cloaked mole, still hidden among the Scouts, ambushes Levi’s squad and kills Gunther Schultz, setting the stage for the devastating battles to follow. 57th Expedition Outside the Walls | Attack on Titan Wiki