The War was a temporal conflict between the Great Houses and their enemy. Several other parties became involved in a shifting configuration of alliances, notably including Faction Paradox, the Remote, the Celestis, and posthumanity. Because the Protocols of Linearity "eventually" broke, it was difficult or impossible to determine a "final" outcome.
History[]
Before the War[]
The Homeworld existed in cultural stasis for millions of years before irregularities in the breeding engines caused four "mutations". One of these was the Imperator, (PROSE: The Book of the War) who foresaw that the Great Houses were heading for conflict and attempted to prepare by giving the Homeworld a more active role in the Spiral Politic. (PROSE: The Return of the King, The Book of the War)
Greyjan the Sane also foresaw the War and made plans for the Nine Gallifreys to be created through crypto-forming as a precaution. This plan was eventually implemented by Romana, who became War Queen on one Gallifrey and began stockpiling weapons in the Slaughterhouse. (PROSE: The Ancestor Cell)
Romana planned to use Bull-TARDISes to mate with Compassion to create a new Type 103 TARDIS. (PROSE: The Shadows of Avalon) Though this plan failed, (PROSE: The Ancestor Cell) the War King eventually negotiated the creation with Compassion to create 103-form timeships for the War. (PROSE: The Book of the War)
Beginning of the War[]
On Dronid, tensions between agents of the enemy and the Great Houses gradually escalated until a member of the Great Houses went there to try to find an agreement with an enemy contact. This member of the Great Houses was killed, and the first battle of the War began. (PROSE: Alien Bodies, The Book of the War)
Immediately, the enemy and the Great Houses attacked each other at many points of space-time. The enemy attempted a direct attack against the Homeworld itself, which destroyed many Homeworld technologies. (PROSE: The Book of the War)
The Doctor found himself participating in an auction for his own corpse against Wartime factions who wished to weaponise it. (PROSE: Alien Bodies)
War looms clogged the atmosphere of at least one of the Gallifreys with a biodata soot. These looms produced soldiers all day and night to provide the Time Lords with fodder for the War. (PROSE: The Taking of Planet 5)
The Time Lords attempted to beat the enemy with a preemptive strike at their homeworld, which they believed to be Earth. Instead of using conventional time travel, they built a giant warship containing the Cold and sent it to Earth. (PROSE: Interference)
Amid the chaos, the Homeworld found time to attack the Osirian Court. Threatening to flood a crucial point in history with vampires, Sutekh effectively blackmailed the Great Houses into a peace treaty. (AUDIO: Coming to Dust)