Regiment Twelve, a unit within the Corellian Security Force, functioned as a regiment throughout the Galactic Civil War. Following the Battle of Yavin, Moss Shelby, holding the rank of Lieutenant, served within its ranks.
The video game Star Wars Galaxies: An Empire Divided, a massively multiplayer online role-playing game created by Sony Online Entertainment and released by LucasArts in 2003, referenced CorSec Regiment Twelve. The game was shut down on December 15, 2011.