Catastrophic Loss of life 000.272.M42

Prosan of the Cadian system in the Segmentum Obscures has been tectonically compromised. Intelligence suggests that the offending agent is an energy-cannon of immeasurable magnitude. The death toll on the forgeworld has been astronomic; latest reports confirming planet wide social break down, and prevalent rioting.

Third Monthly Cadian Sector Imperial Report 

Operation Competent Siege 000.218.M42 

Two Terran weeks after Ulmar arrives at the space port, he orders his fully operation Bane Blade to be loaded onto a medium corvette. A small fleet of frigates are allocated to the defense of  his prized war machine as it makes for Solar Mariatus. Operation: Competent Siege is initiated.

Second Monthly Cadian Sector Imperial Report

000.098.M42

Immediately after hearing about Aximand's capture, Abaddon dispatches an Astartes kill team. Their task: retrieve Little Horus, and gain intelligence on his captors.

Monthly Cadian Sector Imperial Report

000.055.M42

At the turn of the Millennium direct orders from the Administratum is handed down to Supreme Commander Uskar Creed to route the Black Legion forces from the Cadian System by all means necessary. Forward operating Sergeant Slab is mobilized, and strikes deep into Black Legion territory. Slab and his forces make planet fall; One hundred million Solar Mariatus inhabitants are exterminated with extreme prejudice. Our lord Emperor's force secure a foothold on the planet.

Known Force Dispositions at the Outset of the Thirteenth Black Crusade

+++  The Blessed Forces of the God-Emperor of Mankind +++