A million kilometers overhead elements of the Imperial Navy fight a desperate defensive battle against the vanguard of Hive Fleet Behemoth while across the Segmentum every spaceworthy warship rushes to meet the Tyranid invasion. Hive Fleet Behemoth will be stopped. But not here. Not now.
The planet is lost but on the ground, detachments of the Ultramarines Chapter of Space Marines will fight to keep the main space-port open so that as many people as possible can be evacuated. Shown here is a Rhino APC of the Ultramarines Ninth Company, as laid out in the Codex Astartes the Ninth is a Reserve Company composed of Devestator Squads, the Rhino's markings indicate that it is assigned to the Sixth Squad.