The Prakith campaign was a conflict between the Constitutional Protectorate of Prakith and the New Republic which lasted for many years during the Galactic Civil War and the years before the Yuuzhan Vong War.
Following the final death of Galactic Emperor Palpatine and the collapse of Operation Shadow Hand, Moff Foga Brill decided to pull his forces back to his fortress world of Prakith and solidify his status as an Imperial warlord in the Deep Core.
The war between Brill and the New Republic would go on for many years, with several battles of attrition between the two militaries. At some point prior to the Yuuzhan Vong invasion, Prakith was finally conquered and Moff Brill was ousted.
In 18 ABY, Foga Brill was betrayed by a cabal of his officers, who killed him and attempted to broker peace with the New Republic. The Prakith system was then integrated into the New Republic and reconnected with the rest of the galaxy.