Composition4

The Inquisition fields no army. It fields an authority. A single Inquisitor and a hand-picked retinue of Throne Agents — a psyker, an anti-psyker, an assassin, a tech-adept, a mailed Crusader — each a different instrument turned against a different heresy. Where other forces win by weight of numbers, the Inquisition wins by the exactness of its tools and by the seal its master carries: the mandate that compels the wider Imperium to fight at its side.

That mandate is Requisition, the retinue's defining power. An Inquisitor's word presses Space Marines, Battle Sisters, Guardsmen and the tempered killers of the Officio Assassinorum into service they owe no formal duty. The borrowed muscle is never truly owned — every requisitioned body takes the place of one of the Inquisitor's own, so a retinue that borrows heavily marches thinner for it.

There is no swarm here, and no miraculous save. Endurance is honest carapace plate, a bought rosarius field on the master, and a handful of resilient elites. The Inquisition is the surgeon's answer to the galaxy's rot: few hands, each holding the precise blade the wound demands, and the authority to call down heavier steel when the blade is not enough.

The Ordo Xenos is the Inquisition turned wholly against the alien. Where its sibling Ordos hunt the daemon and the heretic, this one hunts the xeno — the ork, the tyranid, the eldar, the soulless metal of the necron — and it does so not by weight of numbers but by the exact right round. A Xenos warband is a small, elite retinue: a marksman Inquisitor, a special-issue Savant-Gunner, a Death-Cult killer, a sanctioned Mystic, and a bound Jokaero artisan re-forging its guns between battles. Before a shot is fired it declares its prey and bends every weapon, blade and eye to that one breed. It loads ammunition tuned to the target's anatomy, strips the alien of the one rule it leans on, and when the nest must be burned root and brood it signs the seal that summons the Deathwatch. It is weakest against a mixed, no-fixed-type foe, where the declared prey is only one enemy among many and the hunter's edge thins to nothing.