9th Army (Star League)

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9th Army (SLDF) 2765.jpg
9th Army
Unit Profile (as of 2765)
Parent Formation Star League Defense Force
Formed unknown

The Star League Defense Forces Ninth Army was assigned to operations within the Free Worlds League Military Region.[1]


In 2764 the Ninth Army was assigned to the Second District of the Free Worlds League region, with the Army Headquarters located on Chalouba.[1] The 9th Army was one of two SLDF Armies stationed in the Free Worlds League to be based on the mobile army construct, and was responsible for a large number of largely independent Free Worlds League systems within the anti-spinward districts of the League.[2] The Ninth Army covered many of the smaller worlds and systems in the League, providing the largest military presence for worlds that would otherwise be limited to a few companies of militia forces. In addition to their duties in the Free Worlds Military Region, on several occasions the two corps stationed closest to the Illyrian Palatinate offered aid to that small nation, despite the unofficial "hands off" policy. This aid consisted of both humanitarian and military operations.[3]

The Ninth Army was assigned to prevent adventurism by pirates and Lyran Commonwealth rogues. The Ninth was also ready to deploy rapidly to Atreus if the League threatened to withdraw from or declare war on the Star League. When units were not mobilized, they used a variety of tactics to improve their defensive posture. This could include the creation of chokepoints, creating impassible terrain features, or using multiple diversionary strikes to convince an attacker that the SLDF's numbers were much larger than they really were. Many of the deployments undertaken by the Ninth were reactions to incursions, but were limited to brigade or regimental size operations.[3]

However, in response to the Periphery Uprising of 2765, the entire army was redeployed to the Periphery to fight against the rebellion. Many of the Ninth's units were destroyed in the fighting, which had been secretly orchestrated by Stefan Amaris to accomplish his takeover of the Terran Hegemony.[1] In total the Periphery Uprising campaign within the Magistracy of Canopus cost the Ninth Army five Divisions and thirteen Independent Regiments, almost a third of the Ninths total combat strength.[2]

The remnants of the 9th Army would fight in the resulting Hegemony Campaign and suffer heavy casualties by the time Terra was liberated. Of the few units which would survive to 2784, nine would join Operation Exodus, with the rest either disbanding or joining other Great House armies.


In 2765 the commanding officer of the 9th Army was General Zhang Craggs.[2][3]

Corps of the 9th Army[edit]

Composition History[edit]


  • 6 BattleMech Divisions[2]
  • 11 Infantry Divisions[2]
  • 27 Independent Regiments[2]


The designation for the XVIII Corps is used twice in The Star League sourcebook, once for a Corps within the 9th Army, and once for a Corps within the 17th Army. This is most likely a typo or error, as the units forming the two Corps are different.[1][8]

Historical: Liberation of Terra Volume 1 has subsequently confirmed that the XVIII Corps designation within the 17th Army is in error.[9]


  1. 1.0 1.1 1.2 1.3 The Star League, p. 141, "Ninth Army"
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Historical: Liberation of Terra Volume 1, p. 43, "Tenth Army"
  3. 3.0 3.1 3.2 Field Manual: SLDF, p. 115
  4. Field Manual: SLDF, p. 116
  5. Field Manual: SLDF, p. 118
  6. Field Manual: SLDF, p. 120
  7. Field Manual: SLDF, p. 122
  8. The Star League, p. 155, "Seventeenth Army"
  9. Historical: Liberation of Terra Volume 1, p. 45, "Seventeenth Army"