Geno2-5ChiliadAlpha Legion

The troops of the Geno Two-Five Chiliad, one of the Imperial Army regiments of the Old Hundred, bow to an Astartes of the Alpha Legion during the Great Crusade.

The Old Hundred is the name given to the original 100 regiments that comprised the Imperial Army, the Excertus Imperialis, at the start of the Unification Wars on Terra in the late 30th Millennium.

Many of these formations were composed of the first genetically-engineered soldiers the Emperor of Mankind created during that conflict whom He had raised from the first Terran techno-barbarians to swear themselves to His cause.

After Terra was unified and the Emperor embarked upon the Great Crusade to bring all the scattered colony worlds of Mankind across the galaxy under His rule in the newborn Imperium of Man, these regiments were dubbed "the Old Hundred" by the thousands of new regiments raised for the second-line forces that were the Imperial Army.

The Old Hundred were always viewed with the utmost respect and honour by both the other forces of the Imperial Army and even by many of the Terran-born Veterans of the Space Marine Legions who had once fought beside them.

Notable Regiments of the Old Hundred


  • Legion (Novel) by Dan Abnett, Ch. 1
  • The Outcast Dead (Novel) by Graham McNeill, Ch. 11
  • The Solar War (Novel) by John French, Ch. 7
  • The Lost and the Damned (Novel) by Guy Haley, pp. 75, 96
  • The First Wall (Novel) by Gav Thorpe, pp. 221, 346
  • The Horus Heresy - Book Five: Tempest (Forge World Series) by Alan Bligh, pg. 177
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