Beshielach space

Beshielach space (formerly the Autrobulan sector) was a free zone in the War in Heaven, where both the Great Houses and the enemy agreed to not engage in military operations.

The agreement was arranged by the Autrobulus hive, who clustered around a brown dwarf in the system; though both sides consequently attempted surreptitious conquests of the territory, all were rebuffed by the Beshielach security forces and Autrobulan troops. (PROSE: The Book of the War)