Machaon
Machaon was an Apothecary of the Scythes of the Emperor Chapter.[1a]
Machaon was one of the few Marines to survive the invasion of the Chapter's homeworld, Sotha, by the tyranids of Hive Fleet Kraken. He was responsible for aiding in the recovery of Spiridonas, a Librarian who was forced to act as a pseudo-Navigator in the retreat from Sotha and who suffered from massive levels of psychic strain as a result of piercing through the Shadow in the Warp and guiding the Scythes' survivors to their muster point in the Miral System.[1a][1b]
The tyranids would later attack the Miral System as well. The bulk of the surviving Scythes of the Emperor made their stand at their bastion on Miral Prime, the Giant's Coffin, but when Chapter Master Thorcyra was killed, Captain Thracian declared the planet lost and ordered its evacuation. Machaon was killed returning from the Apothecarion by Hadrios, who believed that that the Apothecary may have been compromised.[1c]
