Imperial Guard is a 20-book series with 20 released primary works first released in 2005 with contributions by Mitchel Scanlon, Steve Lyons, Steve Parker, Lucien Soulban, Aaron Dembski-Bowden, Rob Sanders, Richard Williams, Lucien; Parker Soulban, David Annandale, Toby Frost, Guy Haley, Andy Hoare, and Mark Clapham.