5th BattleMech Division

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5th BattleMech Division
Unit Profile (as of 2780)
Nickname The Alula Australis Division
Parent Formation LI Corps
Formed unknown
Disbanded 2780


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


In 2764, the unit was assigned, as a part of the LI Corps, Eleventh Army, to District 1 of the Lyran Commonwealth Military Region and then transferred to District 2 by 2765, to take part in the Periphery Uprising.[1] The Fifth was destroyed during the Hegemony Campaign.[1]


As an SLDF BattleMech Division the Fifth would have been composed with two Brigades of 'Mech regiments and a brigade of Mechanized Infantry regiments.[2]


  • 51st Brigade [3]
  • 52nd Brigade
  • 53rd Brigade


  1. 1.0 1.1 The Star League, p. 144, "Eleventh"
  2. The Star League, p. 133
  3. Field Manual: SLDF, p. 13