Space Marine Battles is a 27-book series with 27 released primary works first released in 2010 with contributions by Steve Parker, Aaron Dembski-Bowden, Andy Hoare, Gav Thorpe, Nick Kyme, Chris Wraight, Sarah Cawkwell, Rob Sanders, C.L. Werner, David Annandale, Guy Haley, Christian Z. Dunn, Ben Counter, Paul Kearney, Mark Clapham, L.J. Goulding, Mike Lee, Joshua Reynolds, and Andy Smillie.