This work is considered secondary-cannon. Although it has not yet been removed from the Robotech universe, it is still not considered Primary Canon. See Continuity and Canon in the Robotech Universe. Base Four was a UN Moon base during the Second Robotech War and some of the Third. In 2031 a research vessel from Base Four investigated an Invid Hive as the Invid Invasion of Earth began. ("Introduction") This article is a stub. You can help Robotech Saga Wiki by expanding it. Retrieved from "https://robotech.fandom.com/wiki/Base_Four?oldid=52641" Categories: Secondary Continuity Article stubs Facilities Locations Community content is available under CC-BY-SA unless otherwise noted.