51st Battle (Clan Steel Viper)

Clan Steel Viper.jpg
51st Battle Cluster
Unit Profile (as of 3061)
Nickname The Silent Strikers
Parent Formation Gamma Galaxy
Disbanded 3061


The Fifty-first Battle Cluster arrived in the Inner Sphere after the Truce of Tukayyid, when it was transferred from Delta Galaxy to help shore up Gamma Galaxy.[1]

In April 3053, the Fifty-first attacked Trell I with the intention of stopping Jade Falcon raids that originated from there. On landing, the Fifty-first found no trace of their opponents, the Eighth PGC, and subsequently walked into an ambush. This triggered a four-day long battle that ended in a Steel Viper victory, but at the cost of serious casualties.[1]

In 3054[2] the cluster was stationed on Trell I along with the bulk of Gamma Galaxy and were still defending the planet in 3060.[3]

During the withdrawal from the Inner Sphere the Fifty-first took heavy casualties prompting the Khan to disband the unit and transfer the survivors to the Ninety-fourth Battle Cluster. Plans to rebuild the Cluster were drawn up, but by 3067 had still not been implemented.[4]


Rank Name Command
Commanding Officers of the 51st Battle
Star Colonel Greg Mathews 3057 - 3061[5][1]


The cluster was experienced in the use of the Viper's Maw tactic and fought in conjunction with the other clusters of the galaxy effectively.[1]

Composition History[edit]


Fifty-first Battle Cluster [5]

  • Command Star (1 OmniMech Star)
  • Trinary Alpha (3 OmniMech Stars)
  • Trinary Bravo(3 OmniMech Stars)
  • Trinary Charlie (1 OmniMech/Elemental Nova, 2 Elemental Stars)
  • Trinary Delta (3 OmniMech Stars)
  • Trinary Echo (3 OmniFighter Stars)


Fifty-first Battle Cluster - Veteran/Reliable [1]

  • 5 Trinaries



  1. 1.0 1.1 1.2 1.3 1.4 Field Manual: Warden Clans, p. 145, "51st Battle Cluster Profile"
  2. Objective Raids, p. 30
  3. Field Manual: Warden Clans, p. 165
  4. Field Manual: Update, p. 67
  5. 5.0 5.1 Invading Clans, p. 95