The purification squads were forces of the Palamarian Freedom Brigade loyal to General Nassuc in her fight against the Regent of Palamar. Following a violent encounter between Nassuc and the Regent on Deep Space 9 in 2373, a purification squad managed to track down and assassinate the Regent. Nassuc also sent purification squads after arms dealers Hagath and Gaila. (DS9: "Business as Usual")