The Battle of the Haven
From ROI Wiki
The Battle of the Haven is a key and pivotal battle that saw the destruction of the ancient Razkor fortress called The Haven, and the final destruction of the Crassians. It was a battle fought by members of The Nine Ancient Races, in cooperation with Earthfleet, that ultimately achieved victory over a powerful, and nearly invincible enemy. It also saw the end of the last remaining Razkor super technology that remained. Once it was done, there was little left for the Razkor to clean up and destroy out of all their people's vast and extremely advanced technologies before finally meeting their people's end.