409th BattleMech Division

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409th BattleMech Division
Unit Profile (as of 2764)
Nickname The League Division[1]
Parent Formation Star League Defense Force
Formed unknown


The Four Hundred Ninth BattleMech Division was a part of the Star League Defense Force Regular Army.


In 2764, the unit was assigned, as a part of the XXVIII Corps, Thirteenth Army, to District 3 of the Lyran Commonwealth Military Region, but was moved to an undisclosed area of the Periphery.[2]The 409th was destroyed during the Hegemony Campaign.[2]


As an SLDF BattleMech division the 409th would have been formed from two Brigades of BattleMech regiments and a brigade of Mechanized Infantry regiments.[3]


  • 4091st Brigade [4]
  • 4092nd Brigade
  • 4093rd Brigade


  1. Field Manual: SLDF, p. 163, Unit Profile
  2. 2.0 2.1 The Star League, p. 146, "Thirteenth"
  3. The Star League, p. 133
  4. Field Manual: SLDF, p. 13