100th BattleMech Division

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100th BattleMech Division
Unit Profile (as of 2784)
Nickname The Castor Division
Parent Formation XVI Corps
Formed unknown


The Hundredth BattleMech Division was a part of the Star League Defense Force Regular Army.


In 2764, the unit was stationed on Robinson[1], assigned as a part of the XVI Corps, Second Army, to District 1 of the Federated Suns Military Region. It was then transferred to District 3 in 2765 as part of the redeployment effort to fight the New Vandenberg Uprising.[2] It would be destroyed in the resulting Amaris Civil War as part of the campaign to win back the Terran Hegemony.[2]


Rank Name Command
Commanding Officers of the 100th BattleMech Division
Major General Jeri Courtemanche 2764[3]




As an SLDF BattleMech Division the 100th would have been composed with two Brigades of 'Mech regiments and one brigade of Mechanized Infantry regiments.[4]


  • 1001st Brigade [5]
  • 1002nd Brigade
  • 1003rd Brigade


  1. Field Manual: SLDF, p. 252, "SLDF - Federated Suns Military Command Map"
  2. 2.0 2.1 The Star League, p. 150, "Second"
  3. Field Manual: SLDF, p. 51, "100th BattleMech Division"
  4. The Star League, p. 133
  5. Field Manual: SLDF, p. 13