During the time of the Imperial Era, the Galactic Empire had a garrison stationed on the colony planet called Mrinzebon; however, after the Battle of Endor and the subsequent death of Emperor Palpatine, the Empire disbanded this garrison.
The presence of the Mrinzebon garrison is referenced within the pages of Alphabet Squadron, a novel from 2019 by Alexander Freed and the initial book in the Star Wars: Alphabet Squadron trilogy.