Garro

Battle-Captain Nathaniel Garro was a member of the Death Guard Space Marines. He led the legion's 7th Company shortly before the Horus Heresy. During the battle to secure Isstvan Extremis, the outermost world of the Isstvan system, ahead of the Isstvan massacre, Garro lost most of his right leg in combat and recieved an augmentic replacement.

Following the massacre, he refused to turn to the worship of Chaos. Along with 68 fellow Death Guard space marines and Iacton Qruze from the Sons of Horus legion, they left on a frigate called the Eisenstein in an attempt to warn the Emperor of the Horus' betrayal.

Crippled by the Death Guard battleship Terminus Est, the Eisenstein barely made the jump into the warp. Once there, she attracted the attention of the chaos god Nurgle. He resurrected dead marines and ship's crew who had sided with Horus and been killed by Garro's men. The ensuing battle between infected warp creatures and loyalist marines resulted in the death of the ship's navigator and forced the Eisenstein to make an emergency exit from the warp.

Stranded hundreds of light years from inhabited space, Garro ordered the Eisenstein's captain to overload her warp engines and jettison them into space. The ensuing explosion echoed across the warp and acted as a beacon for Rogal Dorn and his fleet, who had been becalmed by warp storms. Dorn rescued Garro and took him back to Luna aboard the Phalanx.

On Luna, Garro and Qruze were approached by Malcador the Sigillite and told that they would be needed to form the beginnings of an organisation which would utilise "men and women of inquisitive nature, hunters who might seek the witch, the traitor, the mutant, the xenos".

Sources

• The Flight of the Eisenstein by James Swallow