The Constantinus Iconoclasm was a rebellion led by the former Sergeant Constantinus of the 4th Company of the Sons of Guilliman Space Marine Chapter, which had been charged with freeing the world of Nova Terra, located within the Segmentum Pacificus, from a Tyranid attack by remnants of the Hive Fleet Leviathan. He was a part of a handful of Astartes units left behind on Nova Terra to combat any resurgent Tyranid organisms that had survived the war, and to monitor the populace for signs of Genestealer or other Tyranid infiltration or infection. For three standard years Sergeant Constantinus led his squad on endless patrols through the cave systems of Nova Terra's volcanic plateau where the Tyranids had made planetfall, cleansing nesting broods with Flamer and Chainsword, not once seeking r