Menthar-Promellian War
- Holy war started c.13th century between the space-going empires of Menthar and Promellia (ENT Novel: Tower of Babel; TNG: "Booby Trap")
- Continued for decades, wreaking havoc to both civilizations and much of the space around them
- Final diplomatic efforts begun at the planetoid later termed Babel, but ultimately failed when diplomatic envoys were recalled for a final battle (ENT Novel: Tower of Babel)
- War concluded with mutual destruction of both empires at the Orelious system, culminating in the destruction of Orelious IX (ENT Novel: Tower of Babel; TNG: "Booby Trap")
- Suggested that some survivors may have intergrated into surrounding civilizations to avoid destruction, though evidence is scant (ENT Novel: Tower of Babel)
- By annotations, this is based on the recurring usage of the Promellian makeup as the Algolians and other background aliens
- Suggested that some survivors may have intergrated into surrounding civilizations to avoid destruction, though evidence is scant (ENT Novel: Tower of Babel)
- Major historical Alpha Quadrant event to the point that stories of the conflict continue to spread even by the 24th century (TNG: "Booby Trap")