Nope!It was a big battle between Rogal Dorn's and the Imperial Fists vs the Iron warriors of Portorabo which lead to a grueling fight that lead to massive losses on both sides and to Rogal's pain as he saw their victory in close grasp... The Ultramarines barged in longing in the victory and forcibly imposing to the shame of the imperial fists, to accept the codex astartes and thus finally separating the legion into chapters.Yes! YET another reason to hate the Ultramarines!This shame would be known as the Iron cage.Hey did I get it mostly right?I feel like I forgot a minor detail.