Siege of Eden The Siege of Eden is an event which occurs at the climax of " Final Fantasy XIII " . Unlike many battles in the " Final Fantasy " series , the battle is fought among four separate groups . Prelude . Prior to the siege , the Cocoon inhabitants were in the grip of Pulsian panic . The Cocoon fal ' Cie had manipulated the population into thinking that armies from Gran Pulse would attack Cocoon at any moment , thus the population grew great animosity to the six Pulse l ' Cie . PSICOM and the Guardian Corps divisions , under the orders of Director Yaag Rosch , set out to hunt down and kill them . One Guardian Corps Division , the Cavalry , under the command of General Cid Raines , saw through the fal ' Cie ' s schemes and sought to search for the Pulse l ' Cie in their efforts to liberate Cocoon . However , Raines is later revealed to be a Sanctum l ' Cie whose Focus was to set the Pulse l ' Cie on the path to destroy Cocoon . The fal ' Cie ' s true goal is to sacrifice all the Cocoon ' s inhabitants in order to summon the Maker . However , as they are incapable of doing the deed themselves , they are forced to use a group of humans to carry out the task . Raines leaves the Cavalry and attempts to fight against his Focus and defeat the Pulse l ' Cie to prevent them from fulfilling theirs . Raines is defeated , but transforms into crystal , despite not fulfilling his Focus . While the l ' Cie are on Gran Pulse coming to terms with their Focus , Barthandelus , under the guise of Galenth Dysley , resigns as the Sanctum Primarch and appoints the revived Cid Raines in his place . This angers the Cavalry , now commanded by the newly promoted General Rygdea and provokes them into action . The l ' Cie encounter Barthandelus in Oerba , who informs them of the Cavalry ' s plan to destroy Orphan . The Cavalry , thinking that destroying it will liberate Cocoon , will in fact destroy the floating continent . This forces the l ' Cie to return to Cocoon with a plan to stop the Cavalry from reaching Orphan . Battle . As soon as the l ' Cie arrive in Eden , Barthandelus releases Pulsian monsters from the Arks into the floating city , inciting panic among the populace . Meanwhile , the Cavalry raids the Sanctum headquarters looking for the new Primarch Cid Raines . Raines offers no resistance to the Cavalry , and is reluctantly killed by Rygdea with a single shot at close - range . The Cavalry then make their way to Edenhall , to Orphan . The l ' Cie are also heading to Edenhall and are forced to fight through numerous Sanctum and Pulsian forces . They are met by Yaag Rosch , who fights the party with " the Proudclad " . The l ' Cie defeat Rosch , who retreats . As the l ' Cie fight their way through to the Edenhall ' s front gate , they are met with a strange phenomenon . The air is filled with floating crystal shards , marking the appearance of Etro ' s gate as Barthandelus intended to occur . Thinking it signifies Cocoon ' s suffering , they press on into Edenhall , but are shocked to witness the Sanctum forces and the Cavalry soldiers transforming into Cie ' th , and Yaag Rosch , the sole survivor , attacks the party again in the " Proudclad " . The l ' Cie eventually destroy it and the mortally wounded Rosch finally comes to the conclusion that the fal ' Cie are Cocoon ' s enemies and implores the l ' Cie to stop them . Rosch commands the Sanctum forces to suspend l ' Cie operations and focus on civilian evacuation ; he then sacrifices his life to stop the approaching Behemoth s from attacking the l ' Cie as they descend into Orphan ' s Cradle . The l ' Cie , through the help and guidance of the fal ' Cie Eden , approach Barthandelus for the final time in the Narthex . The l ' Cie fight Barthandelus and defeat him . However as the l ' Cie begin celebrating , the fal ' Cie Orphan appears after having absorbed Barthandelus ' s body . Orphan wishes its own death and forces the l ' Cie to fight it , resulting with all but the Oerbans becoming Cie ' th , and Oerba Yun Fang willingly becomes Ragnarok . However the process is not complete as Fang is unable to destroy Orphan . Orphan tortures Fang for her failure in a cycle of pain and healing , goading her to become Ragnarok and be fully consumed in rage and finish the job she failed to accomplish five - hundred years prior . Suddenly the Cie ' th transform back into l ' Cie , having realized their transformation to be a fal ' Cie illusion , and destroy Orphan ' s shell to stop Fang ' s torture . The party fight Orphan ' s true form and defeat it , ending fal ' Cie domination , with Vanille and Fang sacrificing themselves to become Ragnarok together , and saving everyone in Cocoon while Etro ' s gate fades away . Having watched the events unfold , Etro allows Lightning , Snow , Serah , Hope , Sazh , and Dajh to be freed from being l ' Cie . The siege would later be dedicated as the Day of Ragnarok and mark the beginning of the - AF - calendar .