 Five years later , the three cadet graduates are positioned in Trost District , one of the border towns jutting out of Wall Rose when the Titans attack again . In the ensuing battle , Eren is eaten by one of the Titans before Armin 's eyes . A Titan later appears and begins fighting the other Titans while ignoring humans ; the Titan is revealed to be Eren , who has developed the ability to transform into one . Though he is seen as a threat by some , he helps the military take back Trost District . After being placed on trial for being a danger to the humans , he is taken in by the Survey Corps ' Special Operations Squad , led by Captain Levi . 
