The Invasion of Nova Sulis was a notable campaign conducted by the savage Executioners Space Marine Chapter against the Heretic forces of the Apostate Cardinal Bucharis during the Plague of Unbelief, upon the world of Nova Sulis in 302.M36. During the wars that marked the beginning of the Plague of Unbelief, the Executioners were among the first Space Marine Chapters who took up arms against Cardinal Bucharis' splinter empire based at Gathalamor, notably fighting alongside the Space Wolves, Angels of Absolution and Raven Guard at various points during the conflict. Their most famous action during this time was the invasion and subsequent devastation of the Hive World of Nova Sulis.