Dominion Headquarters was a term used to describe command facilities employed by the Dominion, Cardassian, and Breen senior staff during the Dominion War. While the term usually referred to the command center on Cardassia Prime, it is also used to describe facilities which coordinated forces within a specific sector.
Dominion Supreme Headquarters - CardassiaEdit
Following the capture of Terok Nor, Gul Dukat and Weyoun established their headquarters on the station until it was retaken during Operation Return. It was then moved to a Central Command facility on Cardassia Prime. From here, the Female Changeling, Legate Damar, Weyoun, and later Thot Gor and Pran coordinated the entire war effort. During the Battle of Cardassia, Damar's rebel forces stormed the facility and captured the Changeling. (Deep Space Nine)
Dominion Headquarters - Kalandra Edit
Given the size of the Kalandra sector, the Dominion established a command center on New Xindus within the Xindi Council Building. The facility also contained a bunker for use in the event the building was breached. During the Renewal Offensive, a squad of Reptilians successfully entered and damaged the building. (The Renewal Offensive)
Dominion Command Center - BetazedEdit
Betazed had its own command facility during the duration of the Dominion Occupation. During the Liberation of Betazed, rebel forces vaporized the facility using ultritium rockets and isomagnetic disintegrators.just as the Federation and Dominion forces clashed. Command functions were switched to a secondary facility within minutes, but the temporary loss of coordination was vital. By the time communications had been reestablished, the Dominion was fighting a losing battle. (The Dominion War Sourcebook: The Fires of Armageddon)