FATE

is a Servant summoning system developed by Chaldea Security Organization for the purpose of utilizing Servants in their Grand Orders.
==History==
Mash Demi Servant Experiment.jpg|Galahad about to be summoned into Mash's body.
Chaldea summoning Galahad (anime).gif|Galahad fusing with Mash as he was being summoned.
The system was completed in 2004 A.D. It allows for members of Chaldea who are considered "provisional Masters" to summon Heroic Spirits as Servants. A system patterned after the Heroic Spirit summoning ritual utilized in the Grail Wars of Fuyuki City, which enacts summoning per agreement of purpose between Master and Servant. Marisbury Animusphere used this data as the basis for creating the summoning ritual.Fate/Grand Order - Fuyuki: The Contaminated City in Flame - Section 4: Investigate the Port Ruin
Utilizing FATE, three Servants were successfully summoned in the initial tests:
#Solomon - The first Heroic Spirit, summoned by Marisbury in 2004.Fate/Grand Order - Salomon: The Grand Time Temple - Section 12: Future
#Galahad - The second Heroic Spirit summoned in 2010 was Chaldea’s only successful Heroic Spirit fusion trial. Marisbury was performing the experiment on the ten-year old Mash Kyrielight.Fate/Grand Order - Camelot: The Sacred Round Table Realm - Prologue However Galahad decried Chaldea's brutal experiments, but remained in the world to keep his host alive. Then, after the bombing of Chaldea, he entrusted her with all he had.
#Leonardo da Vinci - The third Heroic Spirit summoned to Chaldea (2012). Marisbury and Romani Archaman were present.Fate/Grand Order - Camelot: The Sacred Round Table Realm - Section 3: Eastward She lacked a Master, but after being convinced to join Chaldea she built a puppet copy of herself as a "Master". Following her death, this puppet would assume the role of her new body. 
Information pertaining to the first two Servants has been designated as classified on the orders of Marisbury, to the extent that Olga was unable to obtain information on the identity of the 1st Servant.
==Characteristics==
Prior to the "Singularity Point F" incident, the FATE system didn't operate very well, and the success rate wasn't very high. Subsequently, the FATE system was stabilized with Mash's infusion as a Demi-Servant. It was only with the assistance of 'Shielder' that the foundation of the summoning system was functionally verified. The Cross-Shaped Shield held by Mash, was used as Catalyst for the establishment of a summoning circle. The shield was composed of the holy relic Round Table, but what lies at its foundation is the "place where heroes assemble". Servants summoned by the FATE system are granted the ability to carry around additional magical energy beyond what they would normally be capable of storing, which lets them remain materialized even if separated from their Master by extreme distances. Additionally, the system provides for all their magical energy requirements while they are within Chaldea's environs, allowing them to stay materialized for what is functionally an unlimited period of time with no discernible decrease in magical energy for their shared Master. If defeated in battle, Chaldean Servants do not return to the Throne of Heroes, but instead return to Chaldea where their Spirit Origins can be reconstituted. 
===Saint Graph registration===
===Saint Graph management===
When the Mages' Association pressured Chaldea to release control of their summoned Servants prior to the Human Order Revision, Da Vinci was able to preserve their memories by ensuring that the Servants' contracts were temporarily frozen rather than being outright annulled, then hand-engraving the relevant records into their Saint Graphs. This process ensured the recovery of their memories even after Chaldea was forced to evacuate onto the Shadow Border.
===Memories===
On rare occasions, Servants summoned using the FATE system are able to retain most or even all memory of their previous summonings, including memories of past Holy Grail Wars. The exact reason for this phenomenon is unknown, but the stability of the Servant's Saint Graph is believed to be a factor in memory recovery. 
===Upkeep and maintenance=== 
Servants summoned into Chaldea need resources to . This is not a source of true growth and development, instead just showing how close they are to reaching their true capabilities.Fate/Grand Order - Interlude - Lady Reines's Reminiscence
===Servant interaction===
Some point after Chaldea's arrival at the Wandering Sea, Leonardo da Vinci and Sion Eltnam Sokaris create a social media program for Servants called , where Servants can interact.Fate/Grand Order - Interlude - The Queen's ??? Days
==References==
Category:Chaldea Security Organization technology
Category:Terminology in Fate/Grand Order