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Map Basic Data Planetary Image
px Name: Parmenio Unknown.jpg
Segmentum: Ultima Segmentum[4]
Sector: Ultima Sector[4]
Subsector: Ultramar[4]
System: Unknown
Population: Unknown
Affiliation: Imperium
Class: Unknown
Tithe Grade: Unknown

Parmenio is a planet in the Ultima Segmentum and part of the realm of Ultramar.[1a][4] It has only one function, as an Ultramarines training planet.[2]


Parmenio was the site of heavy fighting between the forces of the Imperium and Nurgle during the Plague Wars. The planet was occupied by forces under Mortarion, Typhus, and Ku'Gath and heavily corrupted. In the later stages of the conflict Roboute Guilliman led an invasion to reclaim Parmenio[3], coming into battle with Ku'Gath and slaying his lieutenant Septicus.[1c]

Notable Locations

  • Hecaton - Capital city, heavily corrupted and infested during the Plague Wars[1b]
    • Administratum Headquarters - Gigantic domed structure three thousand meters across.[1b]
  • River Sea - Separates Hecaton from Edimos[1b]
  • Edimos - Geographic region[1b]