This elite group of warriors was decimated during the [[Unification Wars]] , but their skill made them famous, to the extent that it's its men were drafted to serve as elite bodyguards for higher -ranking members of the [[Imperial Army]].{{Fn|1}}

By the time of the [[Horus Heresy]], they were considered an infamous as well as near -extinct group. One of the divisions within the Lucifer Blacks was the Ischian Brigade.{{Fn|2}}