The Cardassian War Room was the military command nerve center on Cardassia Prime. It was banked with monitors and large screens that tracked the Cardassian fleet, tactical and intelligence reports, and strategic information in real-time.
Gul Dukat brought Commander Sisko to the War Room to hunt down the USS Defiant when it was stolen by Maquis operative, Lieutenant Thomas Riker, who ultimately wanted to destroy an invasion fleet being built in the Orias system. (DS9: "Defiant")