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The Galactic Empire administers its territory through a continuous regional hierarchy extending from the twenty Oversectors to individual systems, worlds, settlements, and installations. Each tier has a defined executive authority and a clear superior to whom it reports. This structure separates territorial administration from legislative representation and ensures that Imperial policy is carried out by officials responsible for the jurisdiction they govern.
The Imperial system does not require the abolition of indigenous government. Elected assemblies, monarchies, aristocratic councils, municipal authorities, and other established institutions may continue to govern local affairs. Alongside them stands an Imperial governor and bureaucracy responsible for matters reserved to the Empire, compliance with Imperial law, taxation and obligations to the central government, public order, and the protection of Imperial interests.
The six regional-government ranks correspond to the weight of a jurisdiction rather than to an inflexible catalogue of celestial bodies. Subsector government is uncommon and exists only where an intermediate command is justified; sparsely populated systems may likewise be entrusted to a Lieutenant Governor rather than assigned a full Governor.
Under the late Republic, senatorial representation and territorial power often became blurred. Senators might also be monarchs, aristocrats, appointees of local rulers, or political patrons exercising authority that was executive in all but name. The Imperial Senate is a legislature. It debates and enacts legislation, appropriations, and policy subject to Imperial Assent, while Moffs and governors administer the territories of the Empire.
A Senator may advocate for a sector, request information, petition the government, and scrutinise regional administration through the institutions of the Senate. A Senator does not, by virtue of that office, command the sector government or the forces stationed there. Conversely, a Moff's final executive authority within the sector administration does not place that official above the Imperial Charter, the Emperor, Imperial Edicts, enacted law, the courts, or the lawful authority of the ministries.
Regional governors possess genuine command functions over forces assigned to their territorial commands. They may establish security priorities, direct lawful deployments, request reinforcement, and require military support for civil administration. A Governor who orders increased security along a principal thoroughfare may therefore expect the local garrison to carry out that direction.
Professional commanders remain responsible for the organisation, discipline, readiness, and tactical execution of their forces. Territorial authority does not permit a governor to disregard service doctrine, transfer units outside the assigned command without authority, or countermand Imperial High Command. Local indigenous officials possess no command over Imperial troops merely because those troops are stationed within their territory.
The Grand Moff is the Empire's senior territorial governor. The twenty Oversectors descend from the late-Republic Priority Sectors that supported the Grand Army of the Republic's twenty Sector Armies. Following the Imperial Ascension, those wartime jurisdictions were made permanent and their civil and military coordination vested in Grand Moffs.
Every Sector Moff within an Oversector reports to its Grand Moff. The Grand Moff supervises their performance, reconciles policy between sectors, directs intersector priorities, and may intervene where a sector government cannot meet a regional requirement. Each Sector Moff nevertheless remains responsible for the routine administration of an administratively distinct sector.
The Sector Moff is the chief executive governor of a conventional sector and the principal Imperial authority for its civil administration, security, economy, and fulfilment of central policy. Sectors remain the standard territorial divisions inherited from the Republic, each encompassing numerous star systems and retaining its own administrative identity within an Oversector.
The Moff sets sector-wide priorities, directs the Imperial bureaucracy, supervises subordinate governors, coordinates ministry activity, and ensures the collection of revenue and resources owed to the Empire. Routine local administration remains with subordinate officials and indigenous governments unless intervention is required.
A subsector is an optional intermediate jurisdiction established only where strategic, cultural, geographic, economic, or administrative circumstances justify a level of government between the sector and its systems. Most sectors do not require subsector government. Others may contain one or several where populations and Imperial responsibilities are unusually concentrated.
The Subsector Moff coordinates the systems within that territory and gives the Sector Moff a single accountable authority for a particularly demanding part of the sector. The office does not divide or diminish the Sector Moff's authority over the whole sector.
A Governor administers a developed star system as a unified jurisdiction, including its worlds, moons, asteroid fields, orbital routes, stations, and major installations. The office coordinates responsibilities that cross the boundaries of individual worlds: system customs, interplanetary transport, orbital security, resource concessions, communications, and system-wide emergency planning.
The Governor directs Imperial agencies within the system through their lawful chains and may require appropriate support from assigned forces. Ministry police, military garrisons, and specialist agencies retain their own professional commands; they are not a governor's personal forces.
The Lieutenant Governor is the normal Imperial executive for a principal planet or major moon, but the grade follows the weight of the jurisdiction rather than the type of celestial body. A sparsely populated system that does not warrant a full Governor may be administered in its entirety by a Lieutenant Governor.
On a loyal world, the Lieutenant Governor may work beside an elected government, monarch, council, or other indigenous authority, leaving most internal civil affairs in local hands. The Imperial administration handles central obligations and watches the competence and loyalty of the local government. Where necessary, the Lieutenant Governor may assume broader direct powers under superior authority.
A Prefect administers a limited jurisdiction too small or specialised to warrant a higher regional grade. Assignments may include a province, continent, city, industrial district, lesser moon, important orbital habitat, spaceport, penal territory, military-support zone, or isolated Imperial installation.
Prefects provide the Empire with accountable local administration where ordinary municipal or indigenous institutions cannot alone manage Imperial responsibilities. Most orbital habitats remain under an existing system or planetary government; only those of sufficient strategic or administrative importance ordinarily receive a dedicated Prefect.