The Icarii Campaign was the Galactic Empire's effort to subdue the native Icarii on Vestar. It was led by the Lightning Battalion under the command of General Nim and Colonel Abal Karda. After months of vicious fighting, during which they witnessed the Icarii's unusual ability to remain alive after dismemberment, Lightning Battalion employed a horrific biological agent to eradicate the Icarii. The only surviving member of the species was Selestrine, whose head was preserved in a kneebhide casket and stolen by Karda when he fled Vestar.