Cadian Shock Troops: Warhammer 40K Lore Guide

For ten thousand years one world stood at the mouth of hell. Cadia guarded the Cadian Gate, the only stable route out of the Eye of Terror, and its people built their entire civilization around the job of holding it. Every Cadian child learned to strip a lasgun before learning to read. Every city was a fortress. Twelve times the Traitor Legions came pouring out of the Eye, and twelve times Cadia held. The thirteenth time, the planet itself broke.

The Cadian Shock Troops are the most famous of the Astra Militarum regiments, the professional, disciplined, endlessly numerous soldiers who became the template for the whole Imperial Guard. This guide goes deeper than our Guard overview: the fortress world and its mysterious pylons, Cadian society and its Youth Armies, the Kasrkin, the Fall of Cadia in Abaddon's 13th Black Crusade, the Creeds, father and daughter, and the scattered diaspora that still answers "Cadia stands."

Cadian Shock Troops at a Glance

Cadia and the Cadian Gate

The Eye of Terror is the largest warp rift in the galaxy, and for most of the Imperium's history the only reliable way out of it for a battlefleet ran past a single star system. The Cadian Gate was that route, and Cadia was the fortress at its heart. Whoever held Cadia could see every Chaos invasion coming. Whoever took it would open the road to the Imperium.

Cadia was settled after Abaddon's First Black Crusade showed the Imperium what was at stake. After the Second, its cities were rebuilt as Kasrs, fortress-cities ringed by void shields, earthworks, gun emplacements and moats, where every building was designed to be a strongpoint: ammunition dumps under bakeries, gun positions on auditorium roofs, living rooms that doubled as pillboxes.

Cadia also held a secret older than humanity. Thousands of pylons of black stone stood across its surface, each precisely half a kilometer tall, honeycombed with narrow tunnels that defeated every Adeptus Mechanicus scan. Nobody knew what they were. Only at the very end did the truth emerge: they were Necron constructs from the War in Heaven, built to hold back the warp, and they were the real reason the Eye of Terror had not spread further.

A Society Built for War

Cadia was the most militarized society in the Imperium. Imperial sources put more than seventy percent of its population under arms, and its birth rate was pegged to its recruitment rate. Social class followed military rank. The planet lived under permanent martial law, with no Arbites and a Lord Castellan who took supreme command in emergencies. Even civilian clothes were cut in camouflage patterns.

Children joined the Youth Armies, known as Whiteshields for the white stripe on their helmets, training alongside regular soldiers and fighting mock battles in the Cadian wilderness. By ten, most could perform infantry field drills. Men and women both served on the front line. Roughly half of all able-bodied Cadians joined the Shock Troop regiments that fought off-world, while the rest garrisoned Cadia itself. One small physical trait marked them out: most Cadians have violet eyes.

The Kasrkin are the elite of that system: storm troopers selected from the most promising cadets of the Youth Armies, issued carapace armor and hot-shot lasguns, and sent wherever a battle hinges on a single objective. They are to the Cadian regiments what Tempestus Scions are to the wider Guard, with one difference: they are Cadian born and Cadian trained.

How a Cadian Regiment Fights

Cadian doctrine prizes discipline, reliability and adaptability above everything. Where Catachans specialize in the jungle and the Death Korps of Krieg in siege warfare, Cadians are trained to do everything well: close assaults, trench warfare, armored offensives and static defense.

• Combined arms. The classic Cadian Shock Troop regiment integrates infantry, armor and artillery under one command, and Cadia also raised dedicated armored, artillery, mechanized and reconnaissance regiments.
• Flexible size. A regiment can field anywhere from two to thirty companies. The famous Cadian 8th had twenty-four.
• Standard kit. The robust Kantrael-pattern lasgun, flak armor, a rebreather, and the drum-fed grenade launchers and autocannons favored by Cadian squads.
• Armor. Leman Russ tanks, the Demolisher variant above all, plus Chimeras, Sentinels, Basilisks and super-heavies such as the Baneblade. Cadia's most famous tank ace, Knight Commander Pask, is a legend of the tank parks.
• Attitude. Cadians embrace hatred of the enemy as a virtue and spurn weakness. They are fanatically loyal, and almost every Cadian soldier is a career professional from the age of ten.

This is why Games Workshop's archetypal Guardsman, in art and in plastic, has always been a Cadian: helmet, flak vest, lasgun, camouflage fatigues. For more than two decades the Cadian kit has been the face of the Imperial Guard.

Twelve Black Crusades

Every Black Crusade launched by Abaddon the Despoiler had to pass through or around the Cadian Gate, and every one of them broke against Cadian lines or the forces that gathered there. The Imperium came to see "Cadia stands" as a fact of nature. Cadian regiments meanwhile fought on almost every front in the galaxy, from the Gothic War and the Achilus Crusade to Armageddon, Hive Fleet Leviathan and the Taros Campaign. They earned a reputation as the most reliable soldiers the Munitorum could ship anywhere. Their particular hatred, though, was always reserved for the Warmaster of Chaos and his Black Legion.

Ursarkar E. Creed and Jarran Kell

The greatest Cadian of the age was Ursarkar E. Creed. As a boy of eight he survived a cultist attack on Kasr Gallan that killed his family, and he was found in the ruins clutching a laspistol and a copy of De Gloria Macharius. The Cadian 8th took him in. In the Whiteshields he met Jarran Kell, an utterly loyal soldier who would become his Colour Sergeant and stand at his side for the rest of his life, relaying Creed's orders across the battlefield in a voice that could carry through artillery fire.

Creed rose with unnatural speed. His victories made him a Lord General, then Lord Castellan of Cadia, a scruffy, cigar-smoking tactical genius whom his soldiers adored. When the Thirteenth Black Crusade began in 999.M41, a surprise attack by the traitor Volscani Cataphracts wiped out the rest of the Cadian High Command and left Creed in sole command of the planet's defense.

The Fall of Cadia

The Thirteenth Black Crusade was Abaddon's greatest war, and its target was Cadia itself. Traitor Legions and daemon hosts came out of the Eye together, while traitor Guard regiments struck from within. Cadia's Kasrs fell one by one as the defenders fought a grinding retreat that culminated in the battle of Tyrok Fields.

Help arrived from unlikely quarters. The Living Saint Celestine fought at the head of the defense; her story is told in our Adepta Sororitas guide. The Inquisitor Katarinya Greyfax brought her own agendas and resources, described in our Imperial Agents guide. Archmagos Belisarius Cawl of the Adeptus Mechanicus came to unlock the pylons, aided by the Necron Overlord Trazyn the Infinite and an Aeldari intervention. For a moment it worked: the pylons flared to life, pushed back the warp, and forced Abaddon to retreat.

Abaddon answered with an act of planetary murder. He drove the wreckage of the Blackstone Fortress Will of Eternity into Cadia's surface. The impact gouged a crater dozens of miles deep, the pylons failed in a catastrophic chain reaction, and Cadia broke apart and was swallowed by the warp. Creed and the Cadian 8th stayed behind to cover the evacuation, holding back endless hordes of daemons. Jarran Kell died in that last stand, buying time for his Lord Castellan. Fewer than three million Cadian civilians escaped. A world that had held for ten thousand years was gone.

The Fall of Cadia did more than kill a planet. It helped tear open the Great Rift, splitting the Imperium in two and inaugurating the dark age in which the setting now takes place. Cawl escaped to deliver his Primaris Marines to Roboute Guilliman, and the Indomitus Crusade was born from the wreckage. The traitor side of the story, Abaddon's long war and the warband that finally won it, is told in our Black Legion lore guide.

Cadia Stands: The Diaspora

Cadia is gone, but the Cadians are not. Hundreds of regiments were deployed off-world when the planet fell, and they kept fighting. What they lost was a home and a recruiting ground. To keep their regiments alive, Cadian High Command has been forced to draw recruits from the worlds where they fight, from the remnants of shattered Guard units, from penal colonies and from non-Cadian regiments. Native-born Cadians call these newcomers "Transplants." Whole generations of Cadians are now born, raised and trained aboard troopships on the way to the next war zone.

The traditions survive the planet. Cadians still bind a strip of cloth over the eyes of their dead, so that in death they are finally free of the Eye of Terror's gaze. Veterans fight with a special, personal hatred for the Black Legion. And the phrase "Cadia stands", once a statement of fact, has become something closer to a vow: Cadia stands as long as one Cadian does.

Its leadership has changed too. Ursarkar Creed vanished in the fall; later lore suggests he was "collected" by Trazyn the Infinite for his galleries. His daughter, Ursula J. Creed, now holds the title of Lord Castellan of Cadia, a planet that no longer exists, and leads the Cadian regiments in the Indomitus era, wearing her father's coat as a relic. Black Library's Cadian novels follow this new age through the eyes of soldiers like Minka Lesk, a Whiteshield who survived the Fall and became a sergeant in Justin D. Hill's books Cadia Stands, Cadian Honour and Traitor Rock.

How Cadians Differ From the Rest of the Guard

• Professionalism. Many Guard regiments are raised from planetary defense forces of uneven quality. Cadians were soldiers from childhood, which made them the Munitorum's gold standard.
• Versatility. They have no single specialty. That is their specialty.
• Purpose. Krieg seeks atonement and Catachan simply survives; Cadia existed to guard a gate, and its soldiers still behave like sentries for the whole Imperium.
• Grief. Since the Fall, Cadians are a people without a world, which gives their stories an edge of loss and stubbornness no other regiment shares.

Collecting and Playing Cadians

On the tabletop, a Cadian army is the classic Guard experience: disciplined infantry squads holding the line, officers issuing orders, and as much armor and artillery as you can field. Cadians lean toward a balanced, combined-arms force that can adapt to any opponent, and the Kasrkin, released in plastic for Kill Team in 2022, give the army an elite strike element. It is the most approachable way into the Astra Militarum, since most of the faction's core kits are designed around Cadian troopers.

For painters, the traditional Cadian scheme is khaki or green fatigues with darker armor plates, but camouflage is half the fun: arctic, urban, desert and jungle patterns all suit a regiment drawn from a world whose whole culture was war.

Cadian Shock Troops FAQ

What happened to Cadia?

Cadia was destroyed in 999.M41 during Abaddon's 13th Black Crusade. Abaddon rammed the wreckage of the Blackstone Fortress Will of Eternity into the planet, the Necron pylons failed, and Cadia broke apart. Fewer than three million civilians were evacuated.

Do Cadian Shock Troops still exist after the Fall of Cadia?

Yes. Hundreds of Cadian regiments were serving off-world and survived. They now replenish their ranks with recruits from other worlds and remain among the most common regiments in the Astra Militarum.

Why do Cadians have purple eyes?

Most native Cadians have violet eyes, a trait often linked in fan discussion to growing up so close to the Eye of Terror. Official lore notes the trait without giving a definitive cause.

What does "Cadia stands" mean?

It was the Cadian rallying cry for ten thousand years, a statement that the fortress world still held against Chaos. After the Fall it became a vow of defiance and remembrance used by the surviving regiments.

Who are the Kasrkin?

The Kasrkin are Cadia's elite storm troopers, chosen from the best cadets of the Youth Armies and equipped with carapace armor and hot-shot lasguns.

Is Ursarkar Creed dead?

His fate is deliberately uncertain. He stayed behind as Cadia fell, and later lore suggests Trazyn the Infinite took him for his collection. His daughter Ursula J. Creed has succeeded him as Lord Castellan.

Continue Exploring

• Astra Militarum (Imperial Guard) — the full story of the Imperium's mortal army, its tanks and its commanders.
• Warhammer 40K factions guide — all 29 armies, their lore and how they play.
• Death Korps of Krieg — gas-masked siege regiments seeking atonement in death.
• Catachan Jungle Fighters — death-world survivalists and masters of the ambush.
• Necrons — the ancient builders of Cadia's pylons, and Trazyn's dynasty.

For every other army and setting deep-dive, browse the Warhammer 40K lore hub. To chronicle your own Cadian regiment, its battles and the world it lost, Anima is free and runs in your browser with no account: a wiki, a timeline, and campaigns with a live DM screen.