Whothe sibling Orders of the Adepta Sororitas (any two mustering as one Convent)
Termsmap-level muster: when two or more Sororitas Houses hold adjacent worlds, they may declare a combined Convent — shared non-aggression and a shared objective in any scenario against a third faction; the Martyred Lady brings the gunline, the siblings bring Seraphim and penitents
The Martyred Lady stands with its sibling Orders of the Sisterhood. When two or more Sororitas Houses hold adjacent worlds, their commanders may declare a combined Convent: a map-level pact of non-aggression and a shared objective in any scenario fought against a third faction. The Martyred Lady brings the gunline that holds the ground; the Argent Shroud brings its Seraphim to strike the flank the static line cannot reach; the Bloody Rose brings its penitents to break what the fire has pinned. It is not a fixed alliance but a muster of like faith — any two Orders answering the same call, one Convent under one Emperor.
The Ordo Hereticus Requisitionalliance
Whothe chamber militant of the Ordo Hereticus (the Martyred Lady is the anchor-Order of the requisition)
Termssingle-source-of-truth requisition: the Ordo Hereticus may requisition Battle Sisters and Retributors from this House by reference for a phase-gated Inquisitorial operation; in exchange the Ordo marks a heretic warband Excommunicate, binding this House against it as a standing campaign feud — no fixed rival-House feud otherwise exists (the Order's enmity is doctrinal, not territorial)
The Order of Our Martyred Lady is the chamber militant of the Ordo Hereticus, and the anchor from which the Inquisition draws its Sisters. The Ordo Hereticus may requisition Battle Sisters and Retributors from this House for a phase-gated Inquisitorial operation, calling on the gunline where it needs disciplined faith and heavy fire. In exchange, the Ordo marks a heretic warband Excommunicate and binds this House against it as a standing campaign feud. The Order keeps no fixed territorial rival otherwise — its enmity is doctrinal, sworn against the witch and the traitor wherever the Inquisition names them, not against any neighbour on the map.