As at 3061 the Essex-class destroyer Eternity was a WarShip within the Clan Snow Raven touman and was serving as the CSR Eternity, one of ten WarShips that made up the Lum Garrison Fleet. Paired with the Vincent-class corvette CSR Huninn the Eternity was serving as a guard vessel for the orbital factories located at various LaGrange points above Lum. In 3067 the Eternity was still deployed as a part of the Lum Garrison Fleet, serving alongside the Huninn, the Sovetskii Soyuz-class heavy cruiser CSR Avalanche, the Aegis-class heavy cruisers CSR Morning Violence and CSR Scabbard, the Lola III-class CSR Bloody Talon, the Potemkin-class cruisers CSR Bonaventure and CSR Eden Rose, the York-class destroyer CSR Corvidae and the Whirlwind-class destroyer CSR Drake.
On the 20th of September 3070 Clan Steel Viper introduced the Clans in the Homeworlds to their new flagship, the Leviathan Prime-class battleship CSV Perigard Zalman. The Steel Vipers did so by striking at the Clan Diamond Shark Black Diamond Naval Star above Strana Mechty; the Perigard Zalman quickly destroyed the Carrack-class transport CDS Bloodletter and the Lola III-class CDS Predator in the first pass alone, and as the Diamond Shark civilian vessels frantically jumped out of the Strana Mechty system the Perigard Zalman continued its attack, destroying two more Diamond Shark WarShips before the last Diamond Shark WarShip, the Fredasa-class corvette CDS Swift Strike, managed to jump out of the system.
Warned by the Diamond Sharks about the existence of the Perigard Zalman, the Snow Ravens gathered the bulk of their remaining Homeworld naval assets at Lum, where they were gathering a huge convoy of vessels together, destined for the Snow Raven holdings in the Outworlds Alliance. The Snow Ravens gathered together the remains of both the Brim Naval Assault Star and the Circe Battle Star, stripping the convoy of its escort vessels.
The Steel Vipers gathered together the remainder of their Naval Reserve and struck at Lum within days of their assault on the Diamond Sharks; when saKhan Hoskins of the Steel Vipers declared his batchall for the entire system, the Ravens declared all they had to defend. The resulting battle pitched three naval stars on each side against each other, making the naval engagement far larger than that at Lum in 3069. While the Snow Raven fleet was by far the more experienced, their level of skill was counterbalanced by the sheer firepower brought to the battle by the Perigard Zalman and her escorts. The battle lasted for seven hours before the last four surviving Snow Raven WarShips - the Fredasa-class CSR Black Beard, the Aegis-class CSR Black Justice and CSR Lord Death and the Carrack-class CSR Venture Star - forfeited the Trial by jumping out of the system, leaving Lum a Steel Viper holding. The Snow Ravens lost three WarShips in the engagement - the Eternity, the Aegis-class CSR Blue Lancer and the Volga-class transport CSR Tenacity.
The destruction of the Avalanche and four other Snow Raven WarShips unaccounted for specifically by name in sourcebooks was confirmed by the BattleTech Developer Øystein Tvedten via the Catalyst Game Labs Ask The Writers Forum:
|“|| *Opens Ye Olde Tome of Warshippe*
Avalanche - Lum 3068
|— Øystein Tvedten, 01 November 2013|
- Field Manual: Warden Clans, p. 131, "Lum Garrison Fleet"
- Field Manual: Updates, p. 63-64, "Naval Assets"
- Wars of Reaving, p. 51, "Closing the Net"
- Wars of Reaving, p. 52-53, "Closing the Net"
- BattleTech Devloper confirms the destruction of the Eternity, Blue Lancer and Tenacity at Lum