12th Heavy Assault Regiment

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12th Heavy Assault Regiment
Unit Profile (as of 2784)
Nickname n/a
Parent Formation XXI Corps
Formed n/a


The Twelfth Heavy Assault Regiment was a part of the Star League Defense Force Regular Army before entering service as a mercenary unit following the Star League Civil War.


Star League[edit]

In 2764, the unit was assigned, as a part of the XXI Corps, First Army, to District 1 of the Lyran Commonwealth Military Region.[1] The Twelfth survived the New Vandenberg Uprising and the Hegemony Campaign and signed on as a mercenary unit with House Steiner by 2784.[1][2]


The Regiment was stationed on Alkalurops in 2786.[3] In 2791 they supported the 2nd Lyran Guards in their assault on Radostov, destroying the 14th Bolan Defenders in the fighting. Still in support of the Second they captured the planet of Herzberg in 2801 and Finsterwalde in 2803 alongside the 11th Arcturan Guards. Supporting the Eleventh they recaptured Radostov in 2808.[4] The Twelfth then settled into a garrison posting on the planet and was still in place in 2821.[3]

Regaining twenty-percent of their strength during the lull between the First and Second Succession War, by 2830 the Twelfth Heavy Assault Regiment had been redeployed to garrison Zollikofen. By the end of Second Succession War just over thirty years later though, the unit had suffered heavy losses, battered down to a third of their regimental strength. Licking their wounds, as of 2864 the Twelfth Heavy Assault Regiment remained stationed on Zollikofen.[5]

Composition History[edit]

As an SLDF Heavy Assault regiment the Twelfth would have been composed primarily of heavy to assault 'Mechs with an company of attached artillery.[6]


Assault Regiment (100% strength) - Veteran/Reliable [3]


Assault Regiment (47% strength) - Veteran/Reliable [3]


Assault Regiment (68% strength) - Veteran/Fanatical[5]


Assault Regiment (38% strength) - Regular/Fanatical[5]


  1. 1.0 1.1 The Star League, p. 140, "First Army"
  2. House Steiner (The Lyran Commonwealth), p. 45, "Military Readiness"
  3. 3.0 3.1 3.2 3.3 First Succession War, p. 140 "Lyran Commonwealth Armed Forces".
  4. First Succession War, p. 71-2 "Bolan Thumb Campaign".
  5. 5.0 5.1 5.2 Second Succession War (Sourcebook), p. 100, "Second Succession War Deployment Table - Lyran Commonwealth Armed Forces"
  6. The Star League, p. 133