Event · M41
Battle of Tarsis Ultra
The Battle of Tarsis Ultra is a large-scale defence of Tarsis Ultra against a Tyranid hive fleet incursion during the 41st millennium. The world’s position within Imperial-held space made it a target as tendrils of the wider Tyranid threat pressed into the sector, and its garrison and supporting Imperial forces were committed to holding the line rather than ceding the world outright. Accounts of the specific hive fleet splinter involved differ, but the engagement is consistently placed among the defensive actions fought as the Imperium worked to contain the broader Tyranid predations of the era. The fighting is recorded as unfolding across several phases: an initial planetary assault by swarms of Tyranid bio-forms probing the defended zones, followed by a sustained ground campaign in which Astra Militarum formations, reinforced where possible by allied Adeptus Astartes support, sought to blunt the invaders before they could establish a lasting foothold or strip the world of biomass. Void engagements above Tarsis Ultra are also noted as part of the wider struggle, as Imperial Navy elements worked to intercept bio-ships before their cargo of organisms could reach the surface in full strength. The interplay between orbital interdiction and ground defence is treated as characteristic of how the Imperium answered Tyranid incursions across the sector in this period. In the aftermath, Tarsis Ultra is remembered as a world that withstood a Tyranid attempt at consumption, its survival counted among the defensive successes cited when the era’s Tyrannic Wars are discussed. The battle is linked in Imperial record-keeping to the broader chronology of Tyranid activity in Ultima Segmentum, situating Tarsis Ultra as a contemporary reference point alongside other worlds that faced the hive fleets in the same span of the 41st millennium. Its status today is that of a defended Imperial world whose ordeal forms one thread within the larger, ongoing narrative of humanity’s war against the Tyranid menace.
See where Battle of Tarsis Ultra occurred on the galactic map in the 41st Millennium.