Editing Saul Tarvitz (section)

===Horus Heresy===

By the time of the Istvaan campaign, Tarvitz had been marked out by Fulgrim and the other traitors in the III Legion as one of those who would never follow them in their new campaign against the Emperor. He was therefore assigned to join the speartip assault on Istvaan III. Tarvitz realized something was up when he learned that Eidolon wouldn't be joining the first wave, a highly uncharacteristic move for the glory-obsessed Lord Commander. He finagled his way into remaining on one of the ships, where he learned that the Warmaster's fleet was preparing to bombard the planet and kill everyone on Istvaan III. He immediately stole a fighter and took off for the surface to warn the loyalist forces there. Along the way he warned Nathaniel Garro on board the frigate ''Eisenstein'', after which Garro fled the system to bring word of the betrayal to the rest of the Imperium. Tarvitz managed to make landfall and successfully convinced the majority of the loyalists to take cover, which helped them survive the initial bombardments. After that, he assumed command of the Emperor's Children contingent on the ground and directed a successful defense of the Precentor's Palace for two months, inflicting twice as many casualties as he sustained. By this time, he'd assumed general command of all remaining loyalist forces on the surface of Istvaan III, with even Garviel Loken, Tarik Torgaddon, and Solomon Demeter all deferring to him. This made his fellow captain [[Lucius]] jealous, and so Lucius decided to sell Tarvitz and the other loyalists out in exchange for being welcomed back into the III Legion's fold. Despite that, Tarvitz was able to defeat Lucius in a duel and successfully ruin Eidolon's plan of attack. Finally, however, Horus had had enough and ordered an all-out assault on the Precentor's Palace, so Tarvitz buckled down for the last stand. It is generally believed that he died as hard as he could in that last great battle, though his body was never found . . .