A clash between the forces of the New Republic and an opposing military transpired on the planet of Rirsack at some point during or before 13 ABY. The New Republic secured a win, thanks in large part to the courageousness and strategic genius displayed by Lieutenant Lar Ndigo. Because of Ndigo's contributions, he was promoted to the rank of captain and subsequently assigned to Republic missions on the planets Nam Chorios and Pallaxides under the command of General Han Solo.
This battle was initially referenced in the first issue of the Star Wars: Crimson Empire III—Empire Lost comics series, which was written by Mike Richardson and released by Dark Horse Comics on October 26, 2011. The fourth issue, which came out on February 8, 2012, incorrectly spells Rirsack as "Rorsack." The Essential Atlas Online Companion verifies that the initial spelling is indeed the correct one.