Changes

Diaz and Sigismund were charged by their [[Primarch]] [[Rogal Dorn]], with securing the two main forge-complexes on Mars that supplied the [[Legio Astartes]] weapons and equipment, which were led by [[Magos]] Kane and [[Lukas Chrom]]. To achieve this, the task force was split in half and Diaz led his forces to secure Chrom's forge-complex - unaware that the Magos had sided with Horus and was one of the leading [[Dark Mechanicum|traitors]] on Mars. When his task force arrived at Magos' forge-complex, they were attacked and Diaz was forced to secure what resources he could from Crom's hands. Meanwhile, Mars' civil war was nearing its end and those forces loyal to Horus, were close to achieving victory. Recognizing that the task force could not stand against their enemies' superior numbers, Sigismund issued an evacuation order for all loyalist forces and Diaz and his half of the task force retreated, back to [[Terra]], with what resources they could take with them{{Fn|1}}. Several years later into the Heresy, when the [[Alpha Legion]] began their attack on the [[Sol System]], Diaz had been promoted to the rank of [[Lord Castellan]] and given the title '''Siege Master''' within his Legion; as well as being given command of Terra's '''Fourth Sphere'''{{Fn|2}} of defense, which oversaw the blockade of traitor-occupied [[Mars]]. Commanding the largest of Dorn's five-tiered defensive fleets around the Sol System in the [[Solar War]]'s final phase from the [[Battle Barge]] ''[[Fortress of Eternity]]'', Camba Diaz's forces were assailed on both sides by [[Dark Mechanicum]] attacks before being eventually forced to withdraw to Terra.{{Fn|3}}

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