417th Adder Sentinels (Clan Star Adder)

Unit Profile (as of 3060)
Nickname None
Parent Formation Kappa Provisional Galaxy


Assigned to garrison the continent of Toolan on Hoard alongside two conventional Clusters.

In 3058 the 417th was reinforced with a Supernova.

Fought on Arcadia during the Burrock Absorption, where they came to the rescue for the 178th Sentinels.

Nova Cat Abjurement[edit]

In May 3060 a number of Clans began launching attacks on Nova Cat holdings across the Clan Homeworlds. The attacks were in response to the Abjurement of the Nova Cats following their decision to join the Second Star League, and were in defiance of the brief period allocated by the Clan Council in which the Nova Cats were supposed to be able to withdraw to the Inner Sphere unmolested. The 417th Adder Sentinels was one of the units to engage in those attacks, launching an attack against elements of the Nova Cat Kappa Galaxy stationed on Hoard on the 6th of May. The 417th's attacks were made in conjunction with another Star Adder unit, the Eleventh Armored Cavalry Squadron, and other Clans soon began attacking the Nova Cat Clusters on Hoard as well, starting with Clan Ice Hellion and then, two days later, forces from Clan Wolf. Forces from Clan Hell's Horses arrived at the same time as those from Clan Wolf, but didn't attack until the 13th.[1]

It was from Star Colonel Eliza Talasko of the Eleventh that Galaxy Commander Tirill Nostra of Kappa Galaxy learned of the Nova Cat Abjurement, although by the time Nostra learned of what had happened one Nova Cat Cluster, the Forty-ninth Provisional Garrison Cluster, had been destroyed when units from several clans ignored zellbrigen and launched concentrated attacks against individual BattleMechs, killing the entire Cluster; the two remaining Nova Cat Provisional Garrison Clusters, the Fourth and Seventeenth had taken heavy damage.[1]

Kappa Galaxy was ultimately destroyed on Hoard,[2] having been in combat with the Eleventh, the 417th, the First Wolf Lancers, Clan Ice Hellion's Forty-fifth Striker Irregulars and the Hell's Horses' Twelfth Mechanized Cavalry Cluster; despite the battles on the ground and an attack by the Star Adder's York-class destroyer CSA Star Fire, some of the Nova Cat population were evidently able to escape. The Aegis-class heavy cruiser NCS Chronicle destroyed the Star Fire[1] and in 3062 was serving in the Nova Cat Mystic Naval Star in the Inner Sphere.[3]


Rank Name Command
Commanding Officers of the 417th Adder Sentinels
Star Colonel Darren Gena 3059



Composition History[edit]



  • Said to match the firepower of any front-line Assault Cluster.


  1. 1.0 1.1 1.2 Path of Glory, p. 8-9
  2. Field Manual: ComStar, p. 124 "Clan Nova Cat - Zeta Provisional Galaxy"
  3. Field Manual: ComStar, p. 133, "Naval Assets"