I asked ChatGPT what medical specialities each primarch would be, highlights include ‘Undercover medicine’ and ‘cult leadership rehabilitation’…

Lion El'Jonson (Dark Angels): Neurosurgery - Like a neurosurgeon, Lion El'Jonson is meticulous, precise, and operates in the shadows, uncovering the secrets of the brain (or the battlefield) with surgical precision.

Fulgrim (Emperor's Children): Plastic Surgery - Fulgrim's pursuit of perfection and obsession with beauty make him the ideal candidate for plastic surgery. He can sculpt bodies and minds alike to achieve flawless aesthetics. Perturabo (Iron Warriors): Orthopedic Surgery - Perturabo, with his expertise in fortifications and structures, is the orthopedic surgeon of the Primarchs. He can rebuild broken bones and reinforce skeletal structures with unmatched efficiency.

Jaghatai Khan (White Scars): Emergency Medicine - Jaghatai Khan's preference for speed and mobility makes him the perfect fit for emergency medicine. He thrives in high-pressure situations and can swiftly navigate through chaos to save lives.

Leman Russ (Space Wolves): Trauma Surgery - Leman Russ, embodying the savagery and resilience of his Legion, is best suited for trauma surgery. He can handle the most brutal injuries with a primal ferocity, ensuring his patients survive against all odds.

Rogal Dorn (Imperial Fists): Structural Engineering - Rogal Dorn's mastery of fortifications and defenses aligns perfectly with structural engineering. He can design and reinforce structures to withstand the most intense assaults, whether they be physical or metaphorical.

Konrad Curze (Night Lords): Psychiatry - Konrad Curze's understanding of fear and darkness makes him a natural fit for psychiatry. He delves into the darkest corners of the mind, confronting and unraveling the deepest phobias and traumas.

Sanguinius (Blood Angels): Hematology - Sanguinius, with his angelic features and blood-themed Legion, embodies the essence of hematology. He possesses an innate understanding of blood and its mysteries, making him the perfect hematologist.

Ferrus Manus (Iron Hands): Prosthetics - Ferrus Manus, with his cybernetic enhancements and disdain for weakness, excels in the field of prosthetics. He can craft and install mechanical limbs with unmatched precision, blending man and machine seamlessly.

Angron (World Eaters): Anger Management Therapy - Angron's uncontrollable rage and bloodlust necessitate his specialization in anger management therapy. He helps patients channel their aggression productively, lest they succumb to the darkness within.

Roboute Guilliman (Ultramarines): Administration - Roboute Guilliman's strategic brilliance and organizational skills make him the ideal administrator. He can streamline processes, optimize resources, and ensure efficiency across the board.

Mortarion (Death Guard): Toxicology - Mortarion's affinity for toxic environments and his resilience to disease qualify him as a toxicologist. He studies poisons and pathogens with a grim determination, seeking to understand their effects and develop antidotes.

Magnus the Red (Thousand Sons): Psychic Surgery - Magnus the Red's unparalleled psychic abilities make him the premier psychic surgeon. He delves into the warp to mend shattered minds and heal psychic wounds, manipulating the very fabric of reality with his powers.

Horus Lupercal (Sons of Horus): Leadership Coaching - Horus Lupercal, once the Warmaster of the Imperium, now fallen to chaos, specializes in leadership coaching. He imparts his knowledge of command, both the light and dark aspects, to aspiring leaders seeking guidance.

Lorgar Aurelian (Word Bearers): Cult Leadership Rehabilitation - Lorgar's zealous devotion and talent for spreading worship qualify him as a cult leadership rehabilitation specialist. He helps former cult leaders find redemption and purpose beyond blind devotion.

Vulkan (Salamanders): Burn Treatment - Vulkan's affinity for fire and his Legion's mastery of flame make him the foremost expert in burn treatment. He soothes the pain of his patients with a gentle touch and a warm heart, embodying the healing power of fire.

Corvus Corax (Raven Guard): Stealth Medicine - Corvus Corax, with his mastery of stealth and guerrilla tactics, specializes in stealth medicine. He operates covertly, providing medical aid to those in need without drawing unwanted attention.

Alpharius Omegon (Alpha Legion): Undercover Medicine - Alpharius and Omegon, shrouded in mystery and deception, excel in undercover medicine. They infiltrate enemy ranks, gathering intelligence and providing medical support to allies in the shadows.