The Third Order was a division of the Cardassian military.

In 2375, Legate Damar sent a priority communique to Gul Yaltar of the Third Order. (DS9: "Image in the Sand")

During the Dominion War, detachments of this order, according to Damar's speech at the start of the Cardassian Rebellion, attacked the Dominion outposts an cloning facility on Rondac III. (DS9: "The Changing Face of Evil")