The Redwings of Redemption (Unknown Date.M33) - Aided by the vast armouries of The Rock, the Angels of Redemption restructure and re-equip their 1st and 2nd Companies -- the "Redwings" -- in emulation of the Dark Angels' Deathwing and Ravenwing Companies. The other Unforgiven Successor Chapters soon follow suit.
Increasing Observation (Unknown Date.M34) - As the Imperium tightens its controls following the Great Scouring and the ensuing consolidation of power, the Dark Angels and their Successor Chapters find themselves under increasing scrutiny. Only their flawless battle record and eagerness to persecute the Imperium's enemies allow them to avoid censure.
Noble Passing (101.M34) - While leading his Chapter to victory in the Bloodpox Campaign against the Death Guard Traitor Legion and the Brotherhood of the Plague, the twelfth Supreme Grand Master of the Dark Angels Chapter, the esteemed Armaros, contracts the loathsome pox known as Nurgle's Rot. His rapid deformation convinces the Supreme Grand Master to immediately pass the Lion Helm to his successor. To ensure the infection does not spread, Armaros voluntarily enters The Rock's reactor chamber and is wholly consumed.
In the Wrong Hands (456.M34) - Inquisitor Halleck, after many decades tracking degenerates in wilderness space, captures a mysterious Heretic known only as the Angel of Truth. The last Vox broadcast by Halleck's ship claims the prisoner has broken under questioning and revealed a deep-rooted heresy. While returning to Terra with his revelations, the Inquisitor is beset by an unknown enemy. The only Imperial force in the vicinity is the Dark Angels' Strike Cruiser Black Sword of Vengeance. They report no sign of the Inquisitor, his vessel or the prisoner.

Age of Execration, M37-M39
The Black Gulf Mines (154.M37) - The few survivors of the Zargosoan smuggler fleet break under pressure from a Dark Angels force led by Master Interrogator-Chaplain Molochia. They relate a tale of how a cloaked stranger fought his way aboard their flagship, the Black Needle, claiming parley. He knew the smuggler's code and invoked the rites of combat -- winning his duel and taking the place of a seasoned mate. Within a year, the stranger had risen to the very top, besting the previous captain in single combat. Under his leadership, the Zargosoan fleet -- five ships in all -- concentrated their raids along the Black Gulf Mines. There, amidst the sprawling asteroid fields and orbital man-made platforms, the smugglers raided mining complex after mining complex, hauling off many tanker-ships filled with sought after minerals and gasses. As it turns out, the leader of the mining colony -- known as the Black Gulf Tyrant -- is a figure greatly sought after by the Dark Angels.
Battle for Kurin's Acropolis (Persembe II) (551.M37) - Situated dangerously close to the Eye of Terror, the world of Persembe II suffered a ferocious assault by the High Anarchist Potchek -- a vile Chaos Magister whose forces of Chaos left that world's Planetary Defence Force reeling. Within a week, Potchek's legions swept away all organised resistance and what few Imperial forces remained were driven back to Kurin's Acropolis, the site of an ancient structure raised to the glory of the Emperor during the Great Crusade. Fortunately, their salvation came in the form of the Dark Angels' 3rd Company, and few battle honours evoke more hard-won pride than the lone ribbon that commemorates this campaign. The Astartes of the 3rd Company made a daring Drop Pod assault on Persembe II and created a thin cordon between the Acropolis and the approaching horde of daemons and Chaos Cultists. Master Baradiel, standing shoulder-to-shoulder with his Command Squad, orchestrated a defence that stopped the Chaos forces dead. Once reinforced by the company's war machines, the Dark Angels advanced upon the enemy. Eventually Baradiel came upon the Anarchist and blew the Potchek's head away from his body with his Storm Bolter. The Archenemy's army fractured and the Daemons fled back into the Immaterium. As the mortal soldiers turned to flee the Astartes wrath, the Dark Angels fell upon them. None escaped their righteous fury.
Battle of Midpoint (871.M37) - An Aeldari fleet threatens to destroy the massive space docks of Midpoint in the Argonnes Sector. The sudden appearance of The Rock and the Dark Angels' Swordfleet tips the battle in the Imperium's favour. The Aeldari retreat, but not before the firepower of The Rock annihilates their capital ship and a half dozen vessels of their armada. To this day, the savaged hulls and floating corpses of both sides still hang in the depths of space, forming an eternal graveyard.
Betrayal at Zambeque (883.M37) - The Ravenwing follows a trail that leads all the way to the Imperial Governor of Zambeque, a key Imperial planet sometimes called the gateway to the Gothic Sector. Before they can apprehend the Governor for questioning, however, the planet declares open rebellion against the Imperium and secedes from the Emperor's realm. The Dark Angels' task force is surrounded upon Zambeque by Heretic Astartes of the Alpha Legion, and only the timely counterstrike by half of the Deathwing prevents the annihilation of the entire 2nd Company. The Governor, a Fallen Angel who was once known as Brother Solas, escapes with the remnants of his Traitor Marine allies.
Hunt for Solas (987.M37) - After picking up the trail of the Fallen Angel Brother Solas, the entire Ravenwing deploys en masse on the plains of Picus, an Agri-world in the Orar Sub-sector. All ten of the Ravenwing's Deathshrouds join the hunt, bringing a shroud of arcane darkness to that world's sun-drenched surface that can be seen from orbit. Despite their sweeping efforts, Brother Solas evades his pursuers again, and the Chapter records state that Cypher himself may have had a hand in Solas' uncanny escape.
The Amalgamation Schism (Unknown Date.M38) - The arrival of the Space Hulk Amalgamation triggers a series of events that sees the Crimson Sabres Chapter estranged from the Imperium. A conflict with the Dark Angels over an Interrogator-Chaplain's unorthodox excruciation of a prisoner is thought to be at the heart of the matter.
Altid Crusade (299.M38-309.M38) - The Dark Angels played a crucial part in the Altid Crusade, a decade-long campaign that ended on the colony world of Altid 156. The Dark Angels committed an assault upon the colony world of Altid 156 after it had rejected the rule of Terra solar decades before and declared independence from the Imperium. Although the crusade's ruling council ordered a single regiment of Imperial Guard to assault the wayward colonists, the Dark Angels, acting on information they refused to disclose to the council, insisted on making the assault themselves. The Dark Angels Crusade force was composed of 3 Ravenwing Squads, 5 Deathwing Terminator Squads and 5 Tactical Squads of the 5th Company, along with various support vehicles. Assaulting the pilgrim-colonists' headquarters, the Deathwing met the foe they had really come to fight. Not the separatist colonists, but their leader -- Elucidax the Keeper, a Heretic known to have inspired dozens of rebellions across the quadrant. But Elucidax was known by the Dark Angels by another name: Zeriah, the one-time Captain of the Dark Angels Legion's 14th Assault Company. Though Zeriah was a formidable opponent, killing a dozen Dark Angels, the Ravenwing captured him and transported him back to The Rock. Interrogator-Chaplain Asmodai extracted a confession from the Fallen Dark Angel, leading to the eventual capture of Zeriah's entire band. Zeriah refused to admit his sin in joining Luther in rebellion against the Dark Angels Legion, and languishes alone in a cell to this day. Though their actions on Altid 156 had not been coordinated with the rest of the forces of the Imperium engaged in the Crusade so that they could capture the Fallen Angel, the Dark Angels claimed that "Elucidax the Keeper" had been slain at their hands. This ensured that despite the breach in protocol, no inquiries by other Imperial authorities would be made.
The Blackest Time (666-686.M38) - Three Grand Masters of the Ravenwing are lost in a single year in 666.M38, each one slain while in pursuit of a group of Fallen Dark Angels. This marks the beginning of an unprecedented two-decade period where the Ravenwing has no Grand Master. During this time, the Ravenwing are given direct orders from the Grand Master of the 2nd Company of the Angels of Vengeance, as the Dark Angels wait until a suitable candidate can be found from within their own ranks.
Hundred Planet Rebellion (518.M39) - While attempting to follow Cypher's path, the Dark Angels uncover a mad priest named Alldric the Subverter. The Heretic visionary had led a swathe of planets on the borders of the Veiled Region to reject the rule of the Imperium. Within a solar decade, the Dark Angels and several of their Successor Chapters suppress the Chaos Cultist uprisings and slay their leaders. Such actions are doubly pleasing for Cypher, for not only is he revenged upon the Alpha Legion's machinations, but he further frustrates the Dark Angels. For their part in the campaign, the Dark Angels are awarded many honour badges and campaign ribbons for their actions by the High Lords of Terra. The austere Dark Angels infrequently bear such commendations, but feel pressured to do so in this case. Deep down, the Inner Circle seethe at the dishonour -- for they know the truth, that the badges are but a sign of their failure to capture Cypher once again.
Relief of Rael's World (814.M39) - The Penal facility on Rael's World is the target of a concentrated assault by a coalition of Alpha Legion warbands, many amongst Segmentum High Command are unwilling to expend some of the overstretched resources in its relief. Then, with no warning or explanation, a Dark Angels strike force intervenes. The enemy is routed and their leader captured by the Dark Angels, the deliverance of Rael's World seemingly a by-product of the Chapter's ongoing Hunt for the Fallen.
The Forlex Rescue (Unknown Date.M39) - A Necron stasis-crypt awakens beneath the Imperial colony of Forlex. Striking from orbit, the Guardians of the Covenant drive the xenos back below ground and, though the cost in lives is steep, well over one hundred thousand colonists are safely evacuated.
Battle of Styx (Unknown Date.M39) - T'au forces attempt to annex the Dark Angels recruiting world of Styx. The Rock itself arrives in orbit to defend the planet, and the Dark Angels' response is so violent that the xenos are wiped out in a single solar day.
The Lost Hope of Perdition (891.M39) - An investigation by the Dark Angels of a Space Hulk designated the The Lost Hope of Perdition newly materialised out of the Warp discovers strong elements of the Renegades known as The Cleaved to be aboard. The ensuing fight is won when Dark Angels Assault Squads, advancing behind a trio of Dreadnoughts, get close enough to set Cyclonic Charges in the Hulk's engine rooms, though at the cost of Supreme Grand Master Zakaron, who manually triggers the blast.