Human League Heritage Squads were teams dispatched by the Human League, a Human-Supremacist organization, to locate Corellia's Planetary repulsor. Their mission, masked as a historical research endeavor, was actually part of a larger insurrection to overthrow the Corellian government. General Brimon Yarar served as the leader of these heritage squads.
During 18 ABY, a Heritage Squad was excavating ancient subterranean structures on Corellia. Their true purpose was to unearth a planetary repulsor, a device left behind millennia prior by the Celestials. This device was intended to aid their scheme to depose Micamberlecto, the Governor-General of Corellia. They presented a facade of historical research to conceal their real objective. While Leia Organa Solo, the Chief of State of the New Republic, and her family were present on Corellia for a trade summit, Yarar conducted a tour of their excavation site for them.