The Eleventh Order was a division of the Cardassian military that was, according to Klingon General Martok, a reserve unit that was composed of "old men and walking wounded." They were stationed on Septimus III during the Dominion War.

In 2375, all 500,000 members of the Order were sacrificed by the Dominion when Septimus III was attacked by and conquered by the Klingons. (DS9: "Strange Bedfellows")

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