The Human-Hath War, also known as the Seven-Day War, was a war on the planet Messaline that lasted seven days.
It began when the terraforming colony lost its mission commander to Byzantine Fever. In the power vacuum, the human and Hath factions became greedy and waged war on each other. They recalibrated progenation chambers designed to quickly create workers. Now they bred generation after generation of soldiers. Due to high casualties, they went through about twenty generations a day. This high casualty rate meant that the story of the origins of the war was severely distorted as it was passed on to the new generation as myth.
By day seven the original mission profile had passed completely into legend. All the survivors knew was that they had to search for a now-mythical weapon called the Source, in reality the device needed to jump-start the terraforming process.