Cardassian DMZ

The Demilitarised Zone (sometimes referred to as the DMZ) was a buffer zone in the Alpha Quadrant. The zone was established between the United Federation of Planets and the Cardassian Union, by the terms of the Federation-Cardassian Treaty of 2370. According to the treaty, neither side was permitted to deploy armed starships, or establish military bases in the Zone. In addition, the border between the two powers was redrawn, such as that ownership of several colonies was exchanged both ways – some Cardassian colonies were transferred to Federation control, and vice-versa. The colonists on the affected planets were given the option of resettlement, though most refused.

However, many civilian colonists on both sides of the border objected to the transfer of control and secretly armed themselves, violating the peace terms that established the DMZ. In response to Cardassian mistreatment, the Federation colonists banded together and called themselves the Maquis, dedicated to freeing themselves from Cardassian control.

Places of note:

Marva VI

Cardassian DMZ

Star Trek Adventures: The Long Dark Optimusnorm