Defense of Druthia

Background
The Heb 38th, 73rd and 130th Regiments were among the Imperial Guard forces mobilized to assist in the defense of the Industrial World of Druthia. Druthia was a key supply node for the Imperium’s defense against the Ork Empire of Charadon; it's loss would leave whole Sub-Sectors vulnerable. This is likely the reason that it was targeted by an unknown Chaos Space Marine Warband in 602.M40.

After drawing the defenders into open combat, the traitor Astartes revealed their trump card, two Ravager-class Titans, provided to them by the Dark Mechaniucm: the Perfidious Verba and the Bane of Stulti. While the surviving Guard armor regrouped and engaged the Bane of Stulti, the three under-strength Heb infantry Regiments prepared to draw the Perfidious Verba into a trap.

While the 73rd sacrificed itself to maneuver the Verba into position, the 38th and 130th set up impromptu defensive lines. Meanwhile, an Erendani Tech-Priest attached to the 130th concealed the heavy weapons squads of all three Regiments from the Titan's auspex in a nearby ravine. When the traitor Titan moved to assault the two loyal Regiments, it unknowingly maneuvered itself into a trap. Lascannons, missiles, and thousands of rounds of heavy bolter fire volleyed against the Titan from what was effectively point blank range. At the direction of the Tech-Priest, all fire was concentrated on a single joint in the daemon machine's leg. With what was described as a sickening crack, like breaking bone, the Perfidious Verba ' s leg gave way and the Titan fell. With the beast wounded and felled, morters joined in with the other heavy weapons, salvoing until they were sure the Verba would speak no more.

The survivors of the 73rd and 130th were reorganized into the 38th, and that Regiment would fight on for seven more months upon Druthia. The world was eventually cleared of traitors, and the Regimental honor of "Titan Slayers" was awarded to the Heb 38th by vote of the Martian Synod.