Event · M41
Rophanon Campaign
The Rophanon Campaign was an Imperial defensive action fought at Rophanon against Tyranid incursion during the 41st millennium. It is recorded among the wider war against the tyranid menace that convulsed the Imperium’s eastern and southern reaches across that period, and its record is preserved in the strategic archives held on Terra. The campaign is remembered less for scale than for the desperate defence it demanded of the world’s garrison and population against an enemy that gave no quarter. Accounts describe the campaign’s opening as the arrival of tendrils from a Tyranid hive fleet, detected first by the system’s outer monitor stations before landfall on Rophanon itself. The world’s Planetary Defence Force, reinforced by elements of the Astra Militarum, is recorded as having formed successive defensive lines around the principal population centres as bio-ships and swarm organisms descended in strength. Void engagements accompanied the ground war, with Imperial Navy elements contesting orbital space to slow reinforcement of the swarm and to permit the evacuation of non-combatants where possible. The campaign’s outcome is recorded as a costly Imperial containment of the incursion, though accounts differ on whether Rophanon was fully cleared or left under quarantine in the campaign’s aftermath. It stands among the numerous Tyranid-era actions fought across the same stretch of the 41st millennium, sharing contemporaries with other hive fleet incursions recorded elsewhere in Imperial annals. Rophanon’s place in that broader chronology, and the presence of its record among the Throneworld’s archives, mark it as one node within the Imperium’s long and unfinished war against the tyranid threat.
See where Rophanon Campaign occurred on the galactic map in the 41st Millennium.