Galmor Chase

At the dawn of the 34th millenium, an expedition fleet, composed of two Phrygian Knights companies and led by Strategos Falkarth, moved to quench rebellions in the Imperium planets of the Rathyn Sub-Sector, in the Ultima Segmentum. This was done quickly, though Falkarth realized that some sort of power, either xenos or of the Arch-enemy, was behind the uprisings, as the humans wanted to be "uplifted by their overlords and brought into salvation" Investigating it further, the Silver Shield discovered that all the different uprisings had started soon after the same, unregistered, vessel was sighted in orbit of the planets, and he, with the help of his Oracleos (librarians), managed to find out where the ship had left for the last time.

Arriving at the Galmor Sub-Sector, the Phrygian Knights pursued the ship out of the system, and thus the chase started, which saw the Chapter keeping the, now identified as xenos, ship from doing its purposes in several Imperium planets, though it always managed to escape the Phrygian Knights. After this was repeated six times, the ship didnt move against another Imperium planet, but instead vanished into the void. The Oracleos tracked the ship into a specific point in the empty void between the stars, and Falkarth, choosing not to travel to it through the warp, as he started suspecting doing such was giving away his movements to the xenos, used several gravitation slingshots, and with his vessels powered off he accelerated into the point.

The Phrygian Knights fleet arrived there three years later, and though the ship wasnt there anymore, they found something more: two gigantic pillars in the empty void. Auspex scans did not read anything that their own eyes coudnt see, and the two pillars were thought to form a gate in between them, though it was inactive, and so Falkarth awaited in the void near the pillars. Months later a flickering light was seen coming through, and the xenos ship, now slightly damaged, accelerated into the space between the pillars. They briefly opened a gate between them, and Falkarth powered his vessels and pushed into the gate, the fleet managing to go through it just in time. He arrived in between two similar pillars as those before, but now his ships systems indicated he wasnt near the Galmor Sub-Sector anymore, and in fact, he wasnt in the Milky Way galaxy, for the galaxy itself was seen as a small speck far away into the void. The gate on this side was in orbit of a rogue extragalactic planet, grey, without any atmosphere and barren. The few xenos installations in it, forming some sort of outpost, were the only sign of life. The Phrygian Knights were immediately fired upon, the xenos ships using some sort of gravitational weapons, crushing entire vessels in one instant. Falkarth then diminished the distance between him and his enemies, forcing them to resort to conventional weaponry.

The enemies weren't many, having only a dozen ships, and shortly after they were all destroyed by the Phrygian Knights, the Chapter losing less than half their own vessels. The engagement was followed by a thorough search and extermination in the planet below, though no resistance was met as the instalations were mostly empty. Falkarth boarded one of the destroyed ships that plunged into the surface of the planet, and caught a few xenos bodies: They had a humanoid shape and were llean, tall, hairless and with a crimson skin, wearing no sort of armor or cloths. They had no mouth, nose or ears, and had two thin slits in the place of the eyes that, the Iartros (apothecaries) of the expedition theorized, served all their senses. It was also theorized that they comunicated through the release of odors, as a small gadget that captured and relayed smell were found in all the bodies, much like a vox link.

Next, the Phrygian Knights attempted to reactivate the pillars to no avail, and thus they awaited, until months later it was seen as activating by itself, and Falkarth wasted no time getting through it. He appeared back into the gate by the Galmor Sub-Sector, and returned back to the Imperium. However, as they left, the two pillars imploded soon after and the gate was gone, as if the xenos who had arrived into their destroyed outpost had deactivated it. One Adeptus Mechanicus Magos Explorator, named Nihilus Mor, whom had a good relationship to the Chapter, was told of the discovery and years later started investigating the remaining debree of the Gate and its technology. These gates used a system outside the known webway or the warp, while The Crimson xenos were only sighted again three milleniums afterwards, after the battle of Serdaex, in M37.