Calvin Hudson Lieutenant commander Calvin " Cal " Hudson was a male Human Starfleet officer of the 24th century . He married Gretchen Hudson . He gained distinction for being Starfleet ' s first attaché to the Federation colonies in the Demilitarized Zone , but later fought for the Maquis until his death . Hudson and Benjamin Sisko were close personal friends , having graduated from Starfleet Academy together in 2354 . At New Berlin , the two spent time together with their wives , including at a Mazurka Festival . He also knew Curzon Dax , who was privy to personal information concerning the officer . He was married to Gretchen Hudson for several years until she died in the late 2360s . Hudson was like his friend Benjamin Sisko in many ways ; he was an experienced officer and an able leader who seemed to inspire trust in those he worked with . Hudson , however , was leading a double life after the Federation - Cardassian Treaty in 2370 ; although assigned by Starfleet as the attaché to the planet s in the Demilitarized Zone , he was an influential leader of the Maquis . After seeing the suffering and abuse of the colonists by the Cardassians , he joined the separatist organization and used his Starfleet position to secure intelligence and supplies for them . Commander Sisko uncovered Hudson ' s deception while investigating the destructive implosion of the " Bok ' Nor " and a recent kidnapping of Gul Dukat . At first , Calvin wanted his friend ' s covert assistance by allowing the rebel force to use DS9 as a repair station for their ships , expressing that it would have been nice to work closely once again ; Sisko angrily refused and the two parted ways . Subsequently , Hudson led an attack wing of Maquis ships against three Starfleet runabout s , managing to hold his own and finally escape . ( ) Hudson died in a skirmish with the Cardassians while fighting for the Maquis in 2373 , and was described by fellow Starfleet defector Michael Eddington as a martyr for the cause . Despite their enmity , Sisko was deeply saddened by news of Hudson ' s death . ( ) Appendices . Background information . Calvin Hudson was played by Bernie Casey . The character was originally conceived as the main focal point of " The Maquis " two - parter , as Ira Steven Behr later noted ; " " We thought ' The Maquis ' was the Cal Hudson Show . " " While penning the duology , the writers found Hudson should be less involved in the story . " " So we killed Cal Hudson at the end , " " said Behr . Michael Piller subsequently vetoed this plan , though . " " Michael came to me , " " Behr continued , " " and said , ' No , not this time . We need this character . We ' re not going to ruin another guest star ; you killed < nowiki > [ < / nowiki > Li Nalas as played by ] Richard Beymer [ in ] and you ' re not going to kill Cal Hudson . ' I said OK . Well , it got to the point during dailies where Michael looked up at me and said , ' We should have killed Cal Hudson . " " ( " Captains ' Logs Supplemental - The Unauthorized Guide to the New Trek Voyages " , p . 73 ) According to a cut line from , Curzon Dax once persuaded Hudson and Sisko to play a game of " dom - jot " against two Zakdorn on Pelios Station . The Zakdorn won each game played over seven hours and Curzon revealed he had bet on their victory . ( ' " ) Hudson appears in the " The Lives of Dax " short story " The Music Between the Notes " , which is set on Pelios Station . Hudson also appears in the " The Brave and the Bold , Book Two " and in the " Public Enemies , Private Lives " . In " Saturn ' s Children " , Hudson ' s mirror universe counterpart is depicted as being a senior member of the Terran Rebellion .