Lunar Force was a covert resistance movement that operated on the planet Entralla during the early Imperial period. The organization began as a relief effort led by Renn Contarus, a Jedi Knight whose goal was to provide aid for civilians suffering under the Galactic Empire's tyranny. This initial goal was eventually swept aside by Salian H'dar, a smuggler who—after replacing Contarus—conducted a string of bombings against the Empire. In response, the Imperial Security Bureau took part in an operation to end the organization's activities. As a result, several members of Lunar Force were either killed or arrested, leading to the group's dissolution.