Loyalists

The Loyalist forces during the Five Ruins fought under the orders of the Warmaster, Alexandros, in his defence of the Imperium against the Traitors, Separatists and xenos threats.

Legiones Astartes

 * Iron Revenants
 * Crimson Lions
 * Halcyon Wardens
 * Obsidian Guard
 * Fire Keepers
 * Dune Serpents
 * World Shakers
 * Midnight Host

Mechanicum

 * Eskut
 * Thecalia
 * Iomin
 * Yivadus
 * Tuisto
 * Hatross
 * Maximus
 * Archimedes
 * Ormac IV
 * Oxiranus
 * Caulifrus
 * Akeltenus
 * Atar-Median
 * Iliastus
 * Phaeton
 * Agripinaa
 * Mezoa
 * Accatran
 * Ryza

Knight Houses

 * House Brutii
 * House Ursus
 * House Sarmatis
 * House Zivich
 * House Hawkshroud
 * House Makabius
 * House Orhlacc

Titan Forces

 * Legio Audax
 * Legio Tempestus
 * Legio Atarus
 * Legio Praesagius
 * Legio Defensor
 * Legio Tonarum
 * Legio Contego

Army and Militia

 * Soldiers of Smoke City
 * Korrikan Steam Troopers
 * Tegin Redboots
 * Thandrian Sons
 * Narawhi High Riders
 * Sarmant Silahdars
 * Voltine Hussars
 * Borrydok Highlanders
 * Karrytine Heavy armour
 * Jurrakan Cavaliers
 * Crucian Dynasts
 * Delian Regiments and Delian Scions
 * Albion Ironsides
 * Geno Seven-Seven Romiad

Solar Auxilia Cohorts

 * 26th Merican Cohort
 * 52nd Cohort, the Zanskat Guard
 * 80th Cohort, the Balovian Vanguard
 * 2541st Cohort, the Screaming Eagles
 * Aschehunde

Legion Serf Forces

 * Ebedsakar