Setlik III
Setlik III was the formerly inhabited third planet in the Setlik system, in the Alpha Quadrant. This system was near to the Federation-Cardassian border. Prior to 2347, a Federation outpost had been established on this planet.

During the Federation-Cardassian War, the planet was the target of a sneak attack by a squad of the Cardassian military, which resulted in close to a hundred civilians killed, including the family of Benjamin Maxwell, in what became known as the Setlik III massacre. The  was the first Federation starship to respond, though largely too late to prevent the deaths. (; ) 

Miles O'Brien became known as the "Hero of Setlik III" for leading a successful attack against the Cardassian Barrica encampment during that action. () O'Brien also managed to repair a field transporter under combat conditions to allow himself and thirteen others to escape the planet's surface. ()

During the battle of Setlik III, Starfleet officer Raymond Boone was captured and killed and then replaced by a  who continued to serve in Starfleet until discharged in 2362. Commander Benjamin Sisko exposed 'Boone' as a Cardassian spy in 2370. ()

In 2367, Glinn Daro acknowledged that the attack on Setlik III had been "a terrible mistake", as the Cardassians had erroneously believed it to have been the staging ground for a massive Federation attack. ()

Appendices

Background information 

This planet's quadrant of origin is inferred based on the position of its star system as seen in the star chart appearing in the  episode .

According to the  for "Emissary", the pronunciation for Setlik was "SET-lik".

External link 
 

fr:Setlik III
de:Setlik III
es:Setlik III
nl:Setlik III
Setlik 03
Outposts