280th Mechanized Infantry Division

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280th Mechanized Infantry Division
Formed unknown
Nickname The Cygnus Arm Division
Affiliation SLDF
Parent Command LXVI Corps


The 280th Mechanized Infantry Division was a part of the Star League Defense Force Regular Army.


In 2764, the unit was stationed on Cerulean[1], assigned as a part of the LXVI Corps, Third Army, to District 2 of the Federated Suns Military Region, but was moved to an undisclosed area of the Periphery by 2765, to take part in the campaign to deal with the Periphery Uprising.[2] The final fate of the 280th is currently unknown.[2]


Rank Name Command
Commanding Officers of the 280th Mechanized Infantry Division
Major General Iris Carman 2764[3]


The Mechanized Infantry Divisions of the Star League were used offensively to exploit gaps in the enemy front created by the BattleMech Divisions. They also bore the brunt of defensive actions.

Composition History[edit]

The Division comprised two Brigades of Mechanized Infantry and a single BattleMech Brigade. Also attached was a Ground Aero Wing.[4]


  1. Field Manual: SLDF, p. 252, "SLDF - Federated Suns Military Command Map"
  2. 2.0 2.1 The Star League, p. 149, "Third Army"
  3. Field Manual: SLDF, p. 63, "280th Mechanized Infantry Division"
  4. The Star League, p. 133