Editing Human-Flood war


{{Era|Forerunner|FA}}
{{Battle infobox
|prev=[[Forerunner-Precursor war]]
|conc=[[Human-Forerunner wars]]
|next=[[Forerunner-Flood war]]
|image=
|conflict=
|date=110,000 BCE
|place=[[Milky Way galaxy]]
|result=;Pyrrhic human victory
*Hundreds of worlds infected / destroyed
*Cure found for the Flood
*Flood driven out of Milky Way galaxy
|side1 = [[Prehistoric human civilization|Human Empire]]
|side2 = [[Flood]]
|commanders1=[[Forthencho]]
|commanders2=[[Gravemind]]
|forces1 = Unknown
|forces2 = Unknown
|casual1 = 1/3 of the [[Prehistoric human civilization|Human Empire]] killed
|casual2 = Unknown}}

{{Quote|When [[Shadow-of-Sundered-Star|the Ur-Didact]] finally exhausted [[Prehistoric human civilization|the Humans]] after a millenia, his sentence was severe. We had no way of knowing that the Forerunners were not your ''only'' enemy. [[Human-Forerunner war|Humanity hadn't been expanding]]; [[Flood|they were running]].|[[First-Light-Weaves-Living-Song|The Librarian]], c. [[2557]]}}
The '''Human-Flood war''' was a war fought between [[Prehistoric human civilization|ancient humans]] and the nascent [[Flood]]. It took place concurrently with the [[Human-Forerunner war]], and was one of its primary causes.<ref name="Cryptum 185">'''[[Halo: Cryptum]]''' - ''page 185''</ref> The war destroyed hundreds of worlds, several human-populated systems and cost more than a third of humanity's population. It also forced humanity into war with the Forerunners and contributed to their defeat and de-evolution.

==First Flood contact==
During their colonization of other planets, humans discovered automated cargo ships of unknown origin, which had supposedly arrived from one of the [[Magellanic Clouds]] and crashed on planets near the edge of the galaxy. The humans found no crew, but they did find millions of small transparent cylinders filled with an unknown powder. Early tests showed the powder to be harmless and useless, being composed of lifeless short-chain organic molecules. Humans began to test it out on smaller domesticated animals, one of which being the [[Pheru]]. The powder tests on the Pheru proved to be initially harmless, and indeed appeared to encourage desirable traits to appear in their appearance and behavior. However, the powder was in fact composed of Flood genetic material, and over time it began merging with and altering the genome of the Pheru in order to generate its own [[LF.Xx.3273 Flood Super Cell|Flood Super Cells]]. Over time, the infected Pheru began to infect others and even began showing some symptoms of the Flood mutation, such as fleshy tentacle-like rods. Close contact with the Pheru spread the infection to humanity. Some [[San'Shyuum]] were also infected as the Pheru were also kept as pets on the San'Shyuum worlds. Eventually the Flood began to spread, and the Feral Phase was initiated.

==War==
By the time the human officials discovered what the powder had done, it was too late. Entire planets were infected, and the Flood began to ravage worlds and systems. Humans were forced to retreat into Forerunner controlled space, invading and seizing worlds from other species to make up for the ones they lost to the Flood. Quarantine attempts failed to halt the spread of the Flood, human leaders decided to take a third of the population and genetically alter them by inserting genes designed to fight Flood biomass. They then took this third of the population and "fed" them to the Flood. The new genes aggressively killed off Flood bio-matter and destroyed the Flood until the few that survived were forced to into hiding. They would not reappear for another 9,000 years.<ref name="Cryptum 185"/>

==Aftermath==
The Human-Flood war ravaged humanity and forced them into a losing war with the highly advanced Forerunners. Unaware of the Flood and the threat it posed, the Forerunners declared war on humanity in order to contain what they saw as an overly aggressive species. With the Flood ravaging human worlds on one front and the Forerunners pressing on another, the Human Empire collapsed. After the Forerunners conquered Charum Hakkor, they scattered the remnants of the race across the galaxy, devolving them to a Tier 7 species. This allowed Flood-controlled Human vessels that had managed to leave the galaxy at the climax of the Human-Flood war a means to sneak past Forerunner defenses unnoticed and would eventually spark the event that would later be known as the [[Forerunner-Flood war]].

==Appearances==
*''[[Halo: Cryptum]]'' {{1st}}
*''[[Halo 4]]'' {{Mo}}

==Sources==
{{Ref/SourceList|Columns=2}}
{{Human wars}}
[[Category:Wars]]