Galastram’s Charge

Galastram's Charge is a notable campaign conducted by the Penitent Knights Space Marine Chapter in 432.M34 against a now unknown Renegade Chapter, upon the world of Ostaenus.

History
Patrolling the Sector on the hunt for foes of the Imperium, Lord Crusader Galastram and his fleet encountered a grave and dire situation: a Chaos invasion. The planet of Ostaenus had forces of the Dark Gods spilling across its surface while another Astartes Chapter hanged in orbit. The Penitent Knights beamed messages to the other Chapter's fleet, and none were returned, only the fire of their guns, destroying one of the frigates accompanying the Knights' battle barge The God-Slayer. Shortly after returning wrathful fire onto their aggressors, they received a distress call from Imperial Guard remnants upon Ostaenus' surface. The Guard were about to be overrun and their compound full of citizens would be filled with blood by traitor Space Marines.

At that moment, the Lord Crusader Galastram Traitorbane made a decision to send the entirety of the Order of the Winterbound to evacuate the desperate Imperial Guard and their charges while he, his Knight-Exemplar, and the Order of the Lightbringers would use the God-Slayer's teleportarium to enter the renegade Chapter's battle barge. And so, the Order of the Winterbound under the command of Knight Captain Liowain deployed on the crumbling Guard compound and held their line while their own Thunderhawk transports evacuated civilian and Guardsmen alike. They faced both renegade Astartes and full Chaos Marines, but managed to close of entire corridors with the use of their Shieldbearers and returned bolter fire to their hated enemy.

Galastram, his Knight-Exemplar and the Paladins of the Chapter appeared suddenly amidst the serf and Marine in the battle barge's Command Deck, immediately swinging blade and firing bolt to all around them. The host of the Chapter's elite managed to seal off the Deck from the rest of the ship while they did their work, turning the barge's guns upon its own traitorous fleet. It was at that moment that the Lord Scholar Helleburn informed the Lord Crusader of the construction of a Chaos temple upon Ostaenus' surface. Later receiving the report from Knight Captain Liowain that the Winterbound had evacuated the Guard and innocents but had taken tragic losses, Galastram turned the battle barge on a course to crash into the arising Chaos temple, and his host was teleported back aboard the Knights' "God-Slayer." Although they had fulfilled their duty by saving the lives of many civilians, the Order of the Honored had paid a high price for their duty. Reduced to only a few squads, themselves highly battered and bloodied. Knight Captain Liowain grieved for the loss of his brothers, and requested that those they had saved be taken as Chapter Serfs to avoid the Inquisition killing them and making his brothers' sacrifice mean something. Needless to say, Galastram agreed.