Menthar-Promellian War
- Holy war started c.13th century between the space-going empires of Menthar and Promellia (ENT Novel: Tower of Babel; TNG Novel: The Buried Age; TNG: "Booby Trap")
- Initial conflict spawned when a Promellian ship unknowingly intruded in a Menthar holy system during a sacred period (TNG Novel: The Buried Age)
- Menthar vessels attacked to defend territory (TNG Novel: The Buried Age)
- Promellian vessel was destroyed, two Menthar vessels lost (TNG Novel: The Buried Age)
- Menthar vessels attacked to defend territory (TNG Novel: The Buried Age)
- Initial conflict spawned when a Promellian ship unknowingly intruded in a Menthar holy system during a sacred period (TNG Novel: The Buried Age)
- 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 upon a chance encounter between both fleets in the Orelious system (ENT Novel: Tower of Babel)
- War concluded with mutual destruction of both empires' surviving fleets, culminating in the obliteration 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")