Paul Kearney
Chapter Master Marneus Calgar travels to the remote frontier world of Zalidar on a routine goodwill visit, only to find it overrun by a massive Ork invasion. Cut off and outnumbered, Calgar and his Honour Guard must fight across hostile jungle to reach a beleaguered city and hold its walls against the greenskin tide. The novel dramatizes the legendary stand at Zalathras that cemented Calgar's reputation.
667.M41 - 999.M41
era date, medium confidence