The Trill Defense Ministry was a body present within the Trill government which were charged with the protection of the Trill homeworld and its people. General Taulin Cyl was an officer of the Trill Defense Ministry. (DS9 - Mission Gamma novel: Lesser Evil, DS9 novel: Unity) In 2376, President Lirisse Durghan inferred that the Trill Defense Ministry would make the ban on symbiont joining a self-enforcing proposition. (DS9 - Worlds of Star Trek: Deep Space Nine novel: Trill: Unjoined)