Indomitus Crusade - Notable Campaigns: Battle of Lion's Gate - Roboute Guilliman defeated a massive daemonic assault by the forces of Khorne upon the Imperial Palace. After the Battle of Lion's Gate, sometimes remembered informally as the "Second Battle of Terra," the High Lords of Terra realised that no place in the Imperium was now safe from an assault by the Archenemy.Battle of Vorlese - The Battle of Vorlese represented an attempt by the forces of Chaos to prevent Roboute Guilliman's Indomitus Crusade from leaving Terra by blocking all of the primary Warp routes from the Throneworld into the wider galaxy using the shards of Cadian Pylons to make Warp travel impossible. The Imperium successfully defeated Abaddon the Despoiler's attempt to prevent the reinforcement of the Imperium's defenders across the galaxy.Devastation of Baal - With the arrival of Roboute Guilliman's Indomitus Crusade, the Blood Angels and their Successor Chapters were successful in fending off the great assault of Hive Fleet Leviathan upon their homeworld of Baal. The remainder of the Leviathan is largely consumed by a Warp Storm and a great assault of Khornate Daemons led by the Blood Angels' ancient foe, the Bloodthirster Ka'bandha.Battle of Gathalamor - The Gathalamor System came under sustained attack from the Heretic Astartes of the Word Bearers Traitor Legion. As their Dark Apostles summoned creatures from beyond the veil, the fight turned viciously against the Imperial defenders. The Mordian 84th Regiment and the Sisters of the Order of the Argent Shroud dug in to stage their last stand in the grim ruins of Gathalamor Prime's macro-cathedrum, their prayers for salvation ringing out to the screaming skies above. Sure enough, even as hordes of Traitors and abominations mobilised to attack, the Emperor answered the cries of His followers. Teleport flares erupted through the Heretic lines, gold and silver lightning leaping as a combined force of Custodians and Grey Knights stormed into battle. Bolters roared and crackling blades tore through Heretic flesh, as Trajann Valoris and Grand Master Aldrik Voldus led an assault that saw the Traitor army shattered into battling warbands. Inspired by the sudden arrival of veritable demigods, the Mordians and Sisters of Battle advanced, hymnals rising from their ranks over the roar of Flamers and the scream of massed Lasgun fire. Blood slicked the streets around the macro-cathedrum, corpses piling in gory heaps as the Word Bearers and their daemonic allies fought back furiously. Yet after three solar days and nights of unremitting savagery, the Chaos host was broken in the Battle for the Statue Steps. With fresh Imperial reinforcements flooding in to the wider Gathalamor war zone, the Custodians set course for Terra, leaving the Grey Knights to deal as they saw fit with the unfortunates that they rescued from the macro-cathedrum.Cleansing of Pyros - The warband of Heretic Astartes known as the Revenants of Umidia invaded the Hive World of Pyros and began to slaughter its people and spread the corrupting touch of Chaos. As a result, the Hive World soon fell under the control of the Dark Gods. However Pyros' status as a hub of commerce for its surrounding sectors made it a vital artery for the Indomitus Crusade's supply lines. Its fall to the Archenemy led Lord Commander Guilliman to personally lead the crusade's forces that moved to reclaim the strategically vital planet. With the aid of Primaris Space Marines drawn from the Ultramarines, Imperial Fists and Raven Guard Chapters, Guilliman was able to use his superior tactics to reclaim Pyros from the Revenants of Umidia. Soon only a small group of the Chaos Space Marines and their commanders remained, and these had retreated towards a local spaceport. Guilliman planned to steadily attack and defeat the Chaos remnants within the solar month. However this plan was changed when the Primarch received a plea for aid from the Crimson Fists' Chapter Master Pedro Kantor, who sent a message declaring that his Chapter was being attacked by a vast horde of daemons on Rynn's World and were being overwhelmed. With the fate of the Crimson Fists now hanging in the balance, Guillman was forced to order an immediate full-scale attack on the spaceport held by the Revenants of Umidia and, though the crusade's forces suffered more casualties than expected, the Heretic Astartes were destroyed. With Pyros now safely in the Imperium's control, Guilliman immediately dispatched Primaris Captain Gauvian with reinforcements to aid the beleaguered Crimson Fists Chapter.War of Beasts - The War of Beasts was the great conflict fought over the world of Vigilus, a Sentinel World that represented the crucial terminus of the Nachmund Gauntlet through the Great Rift. As long as the Imperium held Vigilus it could continue to send astropathic messages, starships, troops and supplies into the Imperium Nihilus. Vigilus came under assault from multiple xenos forces and the troops of Abaddon the Despoiler who sought to claim the strategic world for Chaos.Battle of Raukos - The Battle of Raukos was a two-pronged assault upon the world of 108/Beta-Kalapus-9.2 and the Warp rift known as the Pit of Raukos in Wilderness Space. The Loyalist forces quickly overwhelmed the allied Traitor Legions -- including the Word Bearers, the Iron Warriors and the Black Legion -- using the strategic location of the Warp rift to carry out assaults upon the surrounding Imperial worlds. This victory marked the end of the Indomitus Crusade and the start of Guilliman's involvement in the Plague Wars.