Chaos break through imperial defences on Mordecai Secundus

In mid 09.020M42 the forces of chaos brought into the field a new force that had not been deployed against general Kutuzov's forces. Making the warp jump from the daemon forge at Vandrax in the now collapsed Foramen Interdictum to Astralis, a force of Dark Mechanicus joined the Emerald Serpent and the Death Guard on the front lines on Mordecai Secundus. After a detailed analysis, the heretic techno magi put their knowledge to good use, blowing a hole in Kutuzov's front line entrenchments and advancing an armada of troop transports through the gap.

 

to counter this Kutuzov launched his own counter offensive, releasing a regiment of mobile reserves in the form of Tempestus Scions. the Scions scouted out the approaching armada, with their lead forces in Tauroxes, taking positions in old ruins once dedicated to the Emperor in ages past. Identifying the approaching army, the Scions called in their shock troops, making precision drops while  valkyries provided missle and lascannon air support. This initial counter attack managed to wreck an entire flank of transports, but the Dark Mechanicus responded, shooting down a Valkyrie and wiping out the first squads of drop troops.

 

The battle intensified as the second wave of imperial stormtroopers were sent in, hammering the Mechanicus forces and reducing their vehicles to wreckage. The chaos forces were not deterred however, and disembarked their infantry. Backed up by two legged mobile weapons platforms, the mechanicus forces engaged the imperial army in a close combat melee which quickly became a stalemate. The chaos forces held the critical objectives, but were taking heavy casualties. In the end however, the Scions were unable to gain air superiority, which cost them the battle. The Dark Mechanicus air power eventually neutralised the Valkyries, leaving the Scions at the mercy of the chaos air force. Realising this was an untenable situation, Kutuzov withdrew the remaining elite forces in order to preserve their strength. By late 09.020M42 the chaos forces had established a significant salient in imperial lines which now threatened the imperial HQ.