Drop Site Massacre

The Drop Site Massacre is the most commonly used term for the Battle of Isstvan V, one of the first open military conflicts between the traitor forces of the Warmaster Horus and the loyalist forces of the Emperor. Occurring at the outset of the Horus Heresy it is considered a rubicon moment in Imperial history, as it marked the moment where the traitor legions were irrevocably committed to galactic civil war. The effects and aftermaths of the battle - particularly amongst the Legiones Astartes - would still be echoing ten thousand years later.

Date of Setting

006 M31

Related Locations

• Isstvan V

Related Organizations

• Adeptus Astartes
• Archite Palatines
• Emperor's Children
• Imperial Army
• Solar Auxilia
• Traitor Legions