The Ryloth Defense Authority, also known as the RDA, was a paramilitary organization established to protect Ryloth and its people from oppression and slavery. Originating from the ideals of Cham Syndulla's earlier Free Ryloth Movement, the Ryloth Defense Authority functioned with the awareness of the Ryloth government, while simultaneously maintaining autonomy as an additional militia. This group was under the command of Yendor, a one-time member of the Rebel Alliance. Following the events of the Battle of Crait, Yendor and the Ryloth Defense Authority offered support to the Resistance led by General Leia Organa.