|This article is about the Novel by Aaron Dembski-Bowden, for the Hive City see Hive Helsreach|
Helsreach is the second novel in the Space Marine Battles Series. It was written by Aaron Dembski-Bowden and published in 2010. It was republished in the Armageddon (Anthology) alongside Blood and Fire (Novella) in 2013 and within the War for Armageddon omnibus in 2018.
Set during the Third War for Armageddon, Helsreach follows Grimaldus, the newly promoted Reclusiarch of the Black Templars. Leading a group of Black Templars, and supported by the 101st Armageddon Steel Legion and titans of Legio Invigilata, he is tasked with the defense of Hive Helsreach from the Ork invasion.
Other characters and sub-plots include a Black Templar Techmarine attempting to gain access to and activate Ordinatus Armageddon for use in defense of the hive, an Armageddon Steel Legion stormtrooper, the command crew and priest of the Imperator Titan Stormherald, and Astra Militarum staff officers overseeing Helsreach's defence.