Human-Hath War

The Human-Hath War was a war on Messaline that lasted seven days and began when the terraforming colony lost its mission commander.

It started when the Humans and Hath were looking for the Source, but both factions turned greedy and raged war on each other. They both used machines that would generate more soldiers from their tissue DNA. The war lasted seven days. (DW: The Doctor's Daughter)