55th Mechanized Infantry Division

Emblem-important.svg Depreciated InfoBox

Users should be aware that this InfoBox has been replaced by a combined InfoBox that is to be used for both State (House) Commands and Mercenary Commands.

For new or updated articles please use Template:InfoBoxMilitaryCommand
55th Mechanized Infantry Division
Unit Profile (as of 2770)
Nickname n/a
Parent Formation XXVII Corps
Formed unknown


The Fifty-fifth Mechanized Infantry Division was a part of the Star League Defense Force Regular Army.


They participated in Operation KOBALD, a series of wargames that involved every unit of the Eleventh Army fighting each other, and were soundly defeated by the 92nd Jump Infantry Division. As a result the entire command staff of the Fifty-fifth was removed and replaced by new officers. These officers were spending their time improving their soldier's morale, and were then planning on improving their skills.[1]

In 2764, the unit was assigned, as a part of the XXVII Corps, Eleventh Army, to District 1 of the Lyran Commonwealth Military Region and then transferred to District 3 by 2765, to take part in the Periphery Uprising.[2] The Fifty-fifth was destroyed during the Hegemony Campaign.[2]


Rank Name Command
Commanding Officers of the 55th Mechanized Infantry Division


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.[3]


  1. Field Manual: SLDF, p. 141
  2. 2.0 2.1 The Star League, p. 144, "Eleventh"
  3. The Star League, p. 133