what does ''seeded'' mean? Beyond the eastern SDF, some elements of the non-SDF, northern Aleppo Arab and Turkmen rebels have received arms and close air support from the U.S. DoD and the broader coalition. This has received essentially no media coverage, but the non-SDF northern Aleppo rebels are seeded with several units that graduated from the Department of Defense “train and equip” program and are conspicuously equipped with the arms stocks procured for that program.