Solar Auxilia Infantry

While the Horus Heresy predominantly showcased the Legiones Astartes, another elite force played a crucial role in the conflict – the Solar Auxilia. Recognized as humanity's finest mortal warriors, the Solar Auxilia proved their mettle against even the formidable Space Marines. Their strength lay in unwavering discipline, relentless firepower, and overwhelming numbers, compensating for any shortcomings in direct combat against the Astartes.