The criminal syndicates known as the Pakuuni Pirates were essentially a fusion of pirates and smugglers operating out of the Pakuuni system. Their rise coincided with the Battle of Hoth, an event that severely disrupted intergalactic commerce in that region, as well as nearby systems like Argoon, creating hazardous conditions for trade. Nevertheless, Vice-Admiral Thrawn established a new installation, outpost NL-1, and from that base, he managed to bring the Pakuuni system back under control.
In an effort to revive their illicit enterprises within the Sector, the Pakuuni Pirates chose to throw in their lot with the rebels in opposition to the Empire.
The combined might of the Rebels and Pirates was not enough to prevent Thrawn from successfully establishing and fortifying the new base.