While part the Catechism landed on Merrin, another headed south and eastinto the Ork held territory on Sartano. Disturbingly the Catechism, for thefirst time on record, summoned a vast Daemonic Horde to aid them againstthe teeming Ork army, and the gamble paid off. Very soon the Daemonic host had swept through the Orks east of the Sartano Heights and drove a wedge into the Ork lines through the factorium district of upper North Side.Thousands of Orks were enveloped, trapped with their backs to the Sartano Sea as the Chaos forces pushed ever southward.
By 2710.008M42 it looked possible that the Ork presence on Sartano would be eliminated. Fighting on two fronts, with Imperial forces dug in towards Southbourne, the greenskins had nowhere to go, but Nazghat's forces, the elite of the ork Waagh! were on the Island in strength.
Nazghat soon put an end to the Ork rout, stiffening Ork resistance andhalting the retreat. Two days later the line had stabilised and it was theturn of Chaos forces to find themselves enveloped as the Catechism over-reached itself. By 3010.008M42 a less mobile, more stable front line had been established, running from the north coast to the south just west of the main factorium district. For now, the Orks on Sartano had survived.