Portal:United States Army Special Operations Command, Unconventional Warfare Pocket Guide (2016)
“ The public components may negotiate with the nation-state government or occupying power on behalf of resistance movement objectives, and will typically make overt appeals for domestic and international support. Public components may represent resistance strategic leadership or merely an interest section. The underground is a cellular organization within the resistance that has the ability to conduct operations in areas that are inaccessible to guerrillas, such as urban areas under the control of the local security forces. ”
