CC-1138, nicknamed "Bacara," was a clone trooper commander who served in the Grand Army of the Republic. Cloned on the planet Kamino, Bacara received initial training from the former Concord Dawn Journeyman Protector Cort Davin, who taught the young clone the ideals and traditions of the Journeyman Protectors. The Clone Commander learned space and land-based fighting. Bacara was given command of the Alliance Marines, which was attached to the 4th Sector Army. During the war, Bacara and the Alliance Marines earned a reputation as one of the most feared Republic units. Taking a break from the battlefield, Bacara joined ARC trooper Alpha-17's ARC program and graduated early.
Due to his training by the ex-Journeyman Protector Cort Davin, Bacara received a different upbringing than the vast majority of his clone brothers. Learning the traditions, history, and language of the Protectors, Bacara came to see himself not only as a soldier, but also as a lawman as prescribed by the traditions which Davin had taught him. As a result, his learning of the language of Concord Dawn alienated him from many of his fellow clones, who often chose to speak in Mando'a. This caused him to become an independent individual who was often viewed as a loner by other clones.