Overview
On Ichar IV, the enemy had adherents inside the hives before the Tyranids reached them. Genestealer corruption turned parts of the population towards the force that would consume their world. Defenders had to face what was coming through the approaches and what had already been living among them.
The Ultramarines’ intervention helped save Ichar IV during the war against Kraken. Rebuilding followed, under Ultramar’s watch. The physical damage could be identified and repaired in time. The knowledge that neighbours had helped bring the invasion was harder to confine to the places where the fighting had occurred.
M41 and M42 status
Hive world; battleground against Hive Fleet Kraken.
Rebuilt hive world under Ultramar's watch.
Timeline
Genestealer cult unrest paralyses the Ichar hives.
Hive Fleet Kraken assaults the system; Ultramarines counter-attack.
The world is cleansed and its tithes resume under audit.
Reconstruction continues within Ultramar's defensive envelope.
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Cartographic positions and several administrative details are intentionally approximate where published Warhammer sources conflict or provide no canonical coordinate system.