Raeya
From FEInfobase
System on the edge of Federation territory. It was the site of the first major battle of the Borg war.
The Federation Alliance went on a fleet-wide red alert as they got ready for the possibility of the Borg striking them next. Elements from Starfleet's Ninth and Fourth Fleets were met by the Klingon 242nd Battle Squadron at the edge of the Raeya system. On August 3rd, 2382, they were engaged by the Borg. The allied fleet compromised of more then four hundred combat designed ships that were met by nearly fifty Borg ships; eighteen of which were Cubes while the rest were spheres. Starfleet ships took the lead and opened fire using transphasic torpedoes to destroy the Borg armada. The Borg force was decimated. As the crews of the Allied Fleets cheered, a second wave of Borg ships; this time composed of Tactical Cubes and Spheres arrived. Once again transphasic torpedoes were fired but the fear the Borg would adapt to them was realized. Nine Tactical Cubes escorted by twenty six spheres had entered the system but were unaffected by Starfleet's most powerful weapon.
The Allied Fleet soon fell back to the inner core of the Rayea system and their fall back strategy of splitting the Fleet up into mixed task groups of Starfleet and Klingon ships. The Borg soon chased them down and the Battle of Rayea commenced. A single Starfleet ship was able to retreat from the system to inform the Federation and Klingon Empire of what was happening. After the message was received and confirmed the ship was soon attacked by the Borg. No one knows what happened to the Fleet, Avalon Fleet Yards, Starbase Bravo or Raeya 3.