The Second Order was a division of the Cardassian military.

Gul Dukat was head of the Second Order during the Occupation of Bajor through 2371. (DS9: "The Maquis, Part I", "Defiant")

Cardassian Orders
First Order • Second Order • Third Order • Fourth Order • Fifth Order • Sixth Order • Seventh Order • Eighth Order • Ninth Order • Eleventh Order • Twelfth Order • Obsidian Order