War against the Witness

The War against the Witness is an ongoing conflict being fought all across Sol between Humanity and its allies and the forces of the Witness, with other parties being involved as well. After dealing with the threat Savathûn, the Witch Queen and her brood posed on Sol, the Vanguard began to shift their attention to prepare for the Witness's arrival. The Vanguard and its allies would take on the threat imposed by Calus's return and plans to become a disciple, would task The Guardian with securing the relics of Nezarec, and they would aid Ana Bray and Osiris with rebuilding Rasputin in order to both have a means of defense against the Witness and also help Osiris confirm his visions were true.

Shortly after the final assault on Seraph Station the Witness would arrive with its fleet, along with its newest disciple: Calus. Despite their best efforts, the Witness managed to establish a link with The Veil after hijacking The Guardian's Ghost and thus begun the Final Shape. While The Guardian aided in prison break operations across Earth, the Vanguard would repeatedly try to find a way through the portal, all attempts ending in failure. After the reemergence of Titan, the Vanguard would discover that Sloane had survived the disappearance, although she was no partially infused with Taken energy. The Vanguard also discovered that Sloane had befriended Ahsa, a proto-worm that had fled to Titan after the Witness caused her species to slaughter itself in the name of the Sword Logic. After strengthening their psychic connection, Ahsa would reveal to Sloane, and the rest of the Vanguard, about the origins of the Witness and the Final Shape, and that the key to getting through the portal was held by none other than Savathûn herself. After some reluctance, The Vanguard reached an agreement with Immaru, Savathûn's Ghost, in which he would help them bring back Savathûn, under one condition: they deal with her sister, Xivu Arath, first.

Birth of the Witness
Being the first civilization uplifted by the Traveler's Light in recorded history, the species that would eventually become the Witness lived in a Golden Age and would prosper under its influence. However, their people demanded purpose, so they discovered the Traveler shared a connection with the Veil, an enigma associated with Darkness. They eventually learn that the Light affects the physical world and the Darkness affects the mental world. After recovering the Veil from the cosmos, they would link it to the Traveler to enact the Final Shape, but the Traveler refuses the connection and leaves their home planet. The species was undeterred in its pursuit of the Final Shape and would use the power of the Darkness to become one being. Thus, the Witness is born.

Over time, the Witness would use its philosophy of the Final Shape to recruit other species into its fold. It would do this first with the last Lubraean named Rhulk, who became the first of its Disciples upon destroying his home planet of Lubrae. The next species to be influenced by the Witness were the proto-Worm Gods living on Fundament. The proto-Worm Gods would become seduced by the power it offered and accepted it through their invention of the Sword Logic, but one of their kin escaped Fundament through unknown means.

It would trick the Krill into accepting the Darkness once it saw the Traveler's intention to uplift them, so it used the Worm familiar to drift into the Osmium Court and warn the Osmium King of an incoming syzygy on the planet. The King then warned his daughter Aurash of the event. Aurash fled with her sisters Sathona and Xi Ro as the Osmium Court is overthrown by Taox and the neighboring Helium Court. Sathona recovered the same worm familiar that warned the Osmium King and now her of the God-Wave forming as a result of the syzygy, but it also told her salvation lies within the depths of Fundament's oceans. The sister would discover the Needle upon landing at Kaharn Atoll and commandeer the vessel after making the necessary repairs to navigate Fundament's depths. The sister encounter a creature called The Leviathan, who was injured as a result of Rhulk's subjugation of the Worm God Xita and warns them to turn way, lest they get lost in the Deep. The sisters ignore the Leviathan's warning and discover their salvation in the Worm Gods Akka, Yul, Xol, Eir, and Ur. The sisters accept the bargain with the Worm Gods and transform the Krill into the Hive. Aurash took on the King morph and transformed into Auryx, who would become Oryx after discovering the secrets of Taking; Sathona took on the Wizard morph and transformed into Savathûn; and finally, Xi Ro took on the Knight morph and transformed into Xivu Arath. The Worm Gods would provide the technology needed to escape Fundament and the Hive's crusades begin after defeating the Ammonites and causing the Traveler to flee from Fundament's orbit.

The Collapse
Before the Traveler's arrival in the Sol System, it would uplift more civilizations to use its Light. They would range from the Harmony living on the Gift Mast to the Eliksni native to planet Riis, but each time it would flee and the forces of the Witness and the Hive would arrive soon after. The Eliksni survived their cataclysmic event known to them as the Whirlwind. After it fled from Riis, the Traveler would uplift Humanity in the Sol System. The Traveler's arrival in the Sol System began the Golden Age, caused human lifespan to expand threefold, and enabled the humans to colonize other planets in the Sol System. However, the Golden Age would not last long.

As the Traveler was busy terraforming Io's surface, a period of great calamity known as the Collapse would begin. It would first be seen on Titan, when the Black Fleet used its weapons to alter Titan's gravity and destroy the structures supporting the New Pacific Arcology domes. Ahsa, the same proto-Worm that escaped Fundament long ago and sought refuge on Titan's methane seas, was injured by Nezarec, another Disciple of the Witness and the instigator of the Collapse who piloted The Lunar Pyramid. The Traveler would flee to Earth and defend humanity as a result. It would also affect the people aboard the Exodus Green, where the clash between the Traveler and its ancient enemy resulted in the existence of the Distributary and subsequently the birth of the Awoken. It would affect the people on Earth as well.

At the final moments of the Collapse, Savathûn would kill Nezarec and hide the Veil on Neptune, and then the Traveler would sacrifice itself to create the Ghosts and push back the Black Fleet, temporarily stopping the Witness from enacting the Final Shape. Humanity would soon enter the Dark Age with the arrival of the Cabal, the Eliksni who are now known to the humans as the Fallen, and the existence of tyrannical Lightbearers called Warlords in the Sol System.

The Dark Age would soon end with the formation of the Last City and the fall of the Warlords, The Lightbearers defending the Last City became the Guardians led by different members of the Vanguard. The Last City faced many challenges before the arrival of The Guardian, from the clash with the Fallen united under the banners of the House of Devils, House of Kings, and House of Winter to the attempted reclamation of the Moon ending in a Great Disaster. The people of the Last City soon discover that the Traveler's ancient enemy is coming back to finish what it started during the Collapse and that they are unable to survive it this time.

Forces of the Coalition

 * Vanguard
 * Imperial Cabal
 * House of Light
 * House of Spider
 * Awoken
 * Neomuna

Forces of the Witness

 * Disciples of the Witness
 * Xivu Arath's Horde
 * House of Salvation
 * Scorn
 * Taken
 * Loyalists
 * Shadow Legion
 * Sol Divisive
 * Wrathborn
 * Psion Conclave

Savathûn's Forces

 * Lucent Brood

Vex

 * Sol Collective
 * Precursors
 * Descendants

1st Phase

 * Operation Elbrus
 * Vow of the Disciple
 * Vox Obscura
 * Operation Midas
 * Duality
 * Search for Nezarec's Relics
 * Battle of the War Gods
 * Spire of the Watcher
 * Operation: Seraph's Shield
 * Final Assault on Seraph Station

2nd Phase

 * Siege of Neomuna
 * Invasion of Earth
 * Root of Nightmares
 * //NODE.OVRD.AVALON//
 * Skirmish of Titan
 * Ghosts of the Deep
 * The Whetsone
 * Clash of the Hive Gods

List of appearances

 * Destiny 2
 * Season of the Haunted
 * Season of Plunder
 * Season of the Seraph
 * Lightfall
 * Season of Defiance
 * Season of the Deep
 * Season of the Witch
 * The Final Shape