Septimus III

Septimus III is the third planet of the Septimus system.

In 2375, during the Dominion War, the Cardassian Eleventh Order was based there. At this point, the Eleventh Order was no more than a reserve unit, with few battle ready soldiers. The Klingons would later invade Septimus III, successfully landing fifteen divisions of troops. Corat Damar asked Weyoun for Dominion reinforcements to counter the attack, and Weyoun gave him his word that the Cardassian troops would not be allowed to die in vain. Weyoun would not send reinforcements to Septimus III and consequently the planet was captured by the Klingon Empire, with five hundred thousand Cardassian soldiers being killed. Weyoun claimed that by sacrificing their lifes, the troops based on Septimus III had forced the Klingons to expend troops and valuable resources on a "strategically worthless" planet. The loss of life on Septimus III would spurn Damar to form a Cardassian resistance movement against the Dominion. 

News of the fall of Septimus III would spread throughout the Cardassian military, including the junior-ranking officers stationed at the Keralek Base on Ogyas III. Glinn Kelat believed that the Dominion had not sent reinforcements due to a misunderstanding or a miscommunication. Several of the others, including Rugal Pa'Dar, knew that the reason was the Dominion had come to see their people as being expendable. Rantok, the leader of the Cardassian troops on Ogyas III, was loyal to the Dominion and was keen to not have a repeat of the events of Septimus III. This loyalty made him order order Tret Khevet to arrest Tevrek after Verisel heard Tevrek tell Khevet of Damar's resistance movement.