Anaxes became the command center of Imperial Center Oversector, known among spacers as "Sector Zero". (The sector includes all worlds whose XYZ galactic coordinates are positive and begin with a zero, from Coruscant - at 0,0,0 - to Kiribi, nearly 5.000 light-years away in the Colonies at coordinates 099,099,011.) On maps of the galaxy, Sector Zero is a wedge encompassing about a third of a circle and hugging the Deep Core to the "southeast" of Corsucant. Spacers know that Imperial justice is swift and unyielding within this region. An infraction that earns a freighter jock a warning in the Inner Rim results in arrest in Sector Zero.
During the Rebellion Era, Anaxes was the command center for Azure Hammer Command, whose Super Star Destroyer Whelm and fifty-seven other capital ships were tasked with defending Sector Zero against any threats. (A separate command, Azure Shield, protected the Azure Sector and its neighbours.) Two full deepdock fleets were based in the Anaxes system, supplementing its shipyards until needed elsewhere in the Core. Until the Battle of Yavin, Azure Hammer Command and Anaxes Citadel - and ultimately, all forces in Sector Zero - answered to Grand Admiral Osvald Teshik. Anaxes changed hangs a number of times as various Imperial factions struggled to succeed Palpatine, then passed into New Republik control when handed over by its last Imperial commandant, Osted Wermis.