In the fictional Star Trek universe, the Cardassian Union is the formal name of the Cardassian civilization in the Alpha Quadrant. The Enterprise boldly going where no man had gone before. ... Damar of the Cardassian Union, prior to launching a revolution against the Dominion. ... In the fictional Star Trek series, the Milky Way Galaxy is divided into four quadrants, which are further subdivided into sectors. ...
Cardassians, a spacefaring race in the fictional Star Trek universe, and the CardassianUnion were introduced in the Star Trek: The Next Generation episode "The Wounded".
The Cardassian homeworld is Cardassia Prime in the Alpha Quadrant.
Cardassians seen on Deep Space Nine are generally proud and patriotic, and reference is occasionally made to their xenophobic tendencies, although they are often seen co-operating with other races with no apparent friction.
The CardassianUnion was governed by the Depata Council, which in tradition controls the military Cardassian Central Command and the Obsidian Order, the intelligence agency.
A new treaty was instored in 2367 between the Federation and the CardassianUnion, which provided for, among other things, a neutral party overseeing incarcerations of either country's captives.
The Cardassians soon regretted this move, as it was soon revealed that a wormhole between alpha and gamma quadrants existed near-by.