Angels of Vengeance - Notable Campaigns: The Forgotten Wars (580.M31-632.M32) - During an unspoken period of their history, referred to as the Forgotten Wars, rumours led the Dark Angels, along with three of their Successor Chapters, the Angels of Vengeance, the Angels of Redemption and the Lions Sable, to embark upon a harrowing campaign to track down multiple Fallen. The clues led them through Segmentum Obscurus, deep into the Gothic Sector, and eventually into the Eye of Terror itself. In hindsight it is easy to see that the Ruinous Powers baited the Dark Angels. Only the Dark Angels' irrepressible resolve allowed them to escape, and they paid a high price in casualties. The Lions Sable were completely annihilated. To cover up their immediate losses after their warriors were thought lost to the Warp, the resources of the recruiting world of the Lions Sable -- the ebon orb of Nachwald -- were usurped to replenish the Angels of Vengeance and the Angels of Retribution. The Dark Angels staged a false plasma explosion aboard the Rock to explain their loss of records, for it was decided by the Inner Circle to destroy all records relating to the event. Of the Forgotten Wars, the Dark Angels do not speak, nor has it entered into the apocryphal tales told to their initiates. They have gone to great lengths to ensure all references to that campaign or to the Lions Sable have been stricken from the records available to the Adeptus Terra. Deep in the dungeons of the Rock are secreted the only remaining accounts, and only those of the Inner Circle ever learn of that heroic sacrifice that must forever go untold.Siege of Dominus Prime (Unknown Date.M36) - The Dark Angels and Angels of Vengeance both deployed their entire 1st Companies to end the five-year deadlock with the rebel tyrant of Dominus Prime. Official reports detail that nigh on two hundred Terminators cracked open the "unassailable" fortress and massacred every last Traitor within. In truth, the Unforgiven's numbers were substantially higher, and several prisoners were taken back to The Rock for questioning.The Red Heresy (290-310.M36) - During the Age of Apostasy, the Red Heresy Plague erupts across the Don'lorth Sector, a foreshadowing of the later battles that would become known as The Plague of Unbelief. It is here that the Cult of the Old Gods rises. Agitators and anarchists stir up the hives into open rebellion. Workers in their untold billions are urged by red-robed priests to cast off their shackles, to reject the corpse-god Emperor. The horrific slaughter of all agents of the Adeptus Administratum and Adeptus Ministorum is enough to draw in vast fleets of Imperial armed forces. Seeking a quick way to end the rebellion, the Silver Skulls Chapter deploys en masse in a desperate attempt to kill the leaders behind the rising cult. The hunt is disastrous -- with Drop Pod assaults ambushed and multiple Thunderhawks brought down en route to their objectives. Only the arrival of Dark Angels Deathwing and Ravenwing forces, along with the 3rd Company of the Angels of Vengeance, staves off certain defeat. However, the Silver Skulls observe the Deathwing forsaking the battle in pursuit of a mysterious robed Space Marine, who turns out to be the notorious Fallen known as Cypher. Before Cypher escapes, an Angels of Vengeance Librarian detects several Fallen ensconced within the red-robed hierarchy of the Red Heresy. The Silver Skulls are left to dig themselves out of their own predicament. They do so, but openly condemn the Dark Angels; another formal protest is filed to the High Lords of Terra.Grymm's Landing (Unknown Date.M39) - The Dark Angels recruiting world of Grymm's Landing fell into civil war after the Alpha Legion and Night Lords incited rebellion there. The Angels of Vengeance responded, fighting through wave after wave of Renegades, cultists and madmen. Finally, despite massive casualties, they exterminated every living thing on the surface of Grymm's Landing.Siege of San Apolis (Unknown Date.M40) - During this campaign, the Angels of Vengeance's losses were so severe that they were forced to spend almost a Terran century replenishing their ranks and their gene-seed stocks before being able to actively serve the Emperor and do battle effectively once more.Massacre at Darkmor (Unknown Date.M42) - Elements of half a dozen Unforgiven Chapters descended upon the Shrine World of Darkmor, including multiple companies from the Angels of Vengeance, the Consecrators and the Guardians of the Covenant. All had followed their Librarians' scryings to the planet, searching for the newly materialised Fallen Cypher. It was not long before they discovered that they were not the hunters, however, but the hunted. The Warp Storms that subsided to allow their armies into Darkmor's orbit returned in force. On the planet's surface, the Unforgiven found the world's vast cathedrals in ruins and its populace slaughtered. Awaiting in ambush were armies of daemons, Chaos Space Marines and Renegades. What followed was the worst single incident of losses suffered by the Unforgiven since the Forgotten Wars. Less than a hundred Space Marines from an original contingent of a thousand managed to escape, and they did so only because they pursued Cypher, who, in his attempt to flee, led them to a secret teleportation device.