Changes

Forgebreaker began as a project by [[Fulgrim]] to build the perfect weapon for his brother while the Gorgon did the same. In the end, when Fulgrim and Manus had finished their respective weapons, neither could agree on which was the best with the Phoenix claiming that Ferrus' [[Fireblade (weapon)|Fireblade]] was the best and the Gorgon claiming that Fulgrim's Forgebreaker was , in fact , the greatest. In the end, they each gifted their weapon to each other with Fulgrim receiving [[Fireblade]] and Ferrus receiving Forgebreaker; The start of a bond of brotherhood closer than any other two primarchs that lasted until the outbreak of the [[Horus Heresy]].{{cite this}}

When the Heresy began, Fulgrim was sent by [[Horus]] to use his renowned oratory skills to sway his brother to their cause. However, Ferrus remained loyal to the [[Emperor]] and denounced Fulgrim and Horus as traitors. The two brothers duelled dueled and Fireblade was broken by Ferrus and Fulgrim stole Forgebreaker and with it, rendered his brother unconscious. The two primarchs would later meet again on [[Istvaan V]] where they duelled once again for dueled, but this was to be the last time ; with Ferrus wielding the reforged Fireblade and Fulgrim wielding Forgebreaker. In the end, Fulgrim was disarmed and in his panic drew the daemonic [[Blade of Laeran]], which provides provided him with the strength to strike down his beloved brother, Ferrus down. Fulgrim was hesitant to land deliver the killing blow, until the [[Daemon]] within the blade twisted his mind into finishing the duel. Ferrus was beheaded and Fulgrim was became fully possessed by the daemon within the Blade of Laeran.{{cite this}}