Raptors - Era Indomitus: During the Era Indomitus, the Raptors' homeworld's position at the northern edge of the Segmentum Solar resulted in them being amongst the first Space Marine Chapters to respond to Lord Commander of the Imperium Roboute Guilliman's mustering of the fleets of the Indomitus Crusade. The lord commander, having consulted with representatives from the many factions of the Imperial war machine, understood well the unique skills possessed by the Raptors.Thus, when assembling his fleets, he prevailed upon the Raptors' Chapter Master, Lias Issodon, to provide strike forces to no fewer than three of the Indomitus Crusade's fleets. Fleet Primus, Fleet Secundus and Fleet Tertius all contained within their complements of warriors elements of Issodon's Chapter. Their expertise at scouting and guerrilla warfare would prove invaluable as the crusade fleets struck out into the galaxy.Lieutenant Seranis' strike force of Raptors, acting as the forward scouts for Battle Group Orphaeus of Fleet Primus, was instrumental in tracking opportunistic Aeldari Corsairs along the fringes of the Great Rift. Seranis himself led the boarding action upon the Corsairs' flagship Valanith, slaying the pirates' leader and bringing an end to the xenos' predations.The Raptors accompanying Fleet Secundus, meanwhile, found themselves fighting alongside the Black Templars -- a Chapter whose attitude to warfare clashed greatly with their own. Yet, forced to fight side-by-side for extended periods, the Raptors found that their gift for infiltration, assassination and sabotage meshed perfectly with the Black Templars' preference for more direct forms of warfare.The Black Templars Crusade force and their Adepta Sororitas allies led charges against the Heretics on the beleaguered worlds of the Sanctus Reach, allowing Raptors kill-teams to infiltrate enemy lines and eliminate battlefield commanders and frothing demagogues. The kill-team led by Veteran Sergeant Octor Guerris earned particular fame upon the world of Dharrovar, infiltrating the facilities of House Mandrakor and eliminating no fewer than seven traitorous Fallen Nobles.Fleet Tertius contained the largest number of Raptors battle-brothers, including amongst them Captain Kassyan of the 1st Company, alongside dozens of armoured vehicles and well-equipped battle-brothers of the Veteran 1st Company. Fighting predominantly in the Segmentum Solar, the Raptors have been engaged in prolonged combat against Khornate Crusades of Slaughter, suffering great losses in the bloody conflict with their pitiless foes.Chapter Master Lias Issodon and his remaining battle—brothers continue to patrol the regions surrounding the Sutters Spiral Nebula, responding to calls for aid, conducting punitive campaigns against Drukhari raiders and combating an ever—increasing number of Heretic Astartes Renegades. Issodon himself has led several strikes against the Orks encroaching upon the Vordrast System.Utilising the lessons learned long ago during the Sancta Angelis campaign, Issodon hopes to sow discord amongst the Orks and prevent them from unifying into a single, cohesive force that could threaten to overrun the region. To this end, he has dispatched dozens of strike forces and kill-teams to Ork-held territory, each with orders to disrupt and sabotage the xenos foes.