Falling of Helldagon

The Falling of Helldagon was an Imperial defensive campaign conducted by both the Helldagon Exemplars Astra Militarum Regiments alongside the Bloodied Dawn Space Marine Chapter against a large daemonic incursion.

Background
In 969.M41, Helldagon Prime, regimental homeworld of the Helldagon Exemplars Regiments came under attack by a daemonic incursion. The Bloodied Dawn Space Marine Chapter that called this world home, defended it to its last breath alongside the 1st and 2nd Helldagon Exemplars Regiments. The Other 18 Regiments once arriving home would prepare their forces after discovering that the populace waited for such an event to happen to further their own agenda. The Regiments opened Fire as soon as they came in contact with the civilian ships that came back after several years.