In the year 231 BBY, a battle unfolded on Port Haven, an Outer Rim world, pitting the Unified Republic Task Force of the Galactic Republic and Jedi Order against the Nihil pirates. This engagement—part of Operation Counterstrike, the Republic and Jedi's response to the attack on the Republic Fair located on the Outer Rim planet Valo—resulted in a significant triumph for the Unified Task Force. Later that year, Stellan Gios of the Jedi High Council informed the Jedi stationed at the space station Starlight Beacon of the Port Haven victory, along with other victories on Aris and Golrath.
The battle that occurred on Port Haven was first presented in flashbacks within the ninth issue of Star Wars: The High Republic, a comic series from 2021. This issue, part of Phase I of the Star Wars: The High Republic multimedia project, was authored by Cavan Scott and released by Marvel Comics on September 1, 2021.