Blood Vengeance (1994) by Susan Shwartz, S.M. Stirling, Judith Tarr, and Harry Turtledove - As the legend of the Seven swells into a movement that sweeps Haven, millions rise up to fight in the greatest and bloodiest battle this War World has ever seen.
The War World series is a shared-world universe created by Jerry E. Pournelle & John F. Carr and is set in Jerry Pournelle's CoDominium/Empire of Man future history. The moon Haven contains the harshest environments for life among the seventy habitable planets within the CoDominium sphere. After Haven's discovery, this distant moon quickly becomes the center of a major lawsuit over its ownership.
On Earth, overpopulation and rising nationalism require the resettlement of millions of troublesome minorities or the fragile peace between the USSR and the USA will go down in flames. It is up to the CoDominium to solve this problem and it just so happens the Bureau of ReLocation has discovered the perfect dumping ground for millions of unwanted minorities and religious fanatics while the mining companies exploiting Haven’s considerable resources need a cheap and expendable labor pool. One hand washes the other, thus the CD Bureau of Intelligence gives orders to subvert Harmony rule and turn Haven into a CoDominium Protectorate.
Meanwhile, the inhabitants of Haven are having their own problems due to too many transportees from Earth, too few resources, too few live births and the most inhospitable environment known to sustain life—just barely. If that’s not enough, now they have to face a hostile takeover by the very people they left Earth to escape! Visit the War World web site.