This war represented a colossal effort between both races for the control of a single, highly strategic planet. The main conflict lasted for only two standard years, but continuous combat took place between the Imperial forces and the Orks remaining on the world for another twenty Terran years until 961.M41. A notable effect of this invasion resulted in Ghazghkull earning the wrath of Commissar Yarrick, who dedicated his efforts after the Second War to hunting down Ghazghkull, with little success.

Three Space Marine Chapters were involved, including: the Blood Angels, Salamanders and the Ultramarines, along with dozens of regiments of the Astra Militarum as well as a large contingent of Inquisition forces from the Ordo Xenos composed of Squats. The war was fought on the Hive World of Armageddon in the Segmentum Solar, where Ghazghkull Thraka launched an Ork WAAAGH! consisting of five separate Ork tribes in an attempt to seize the planet for themselves.

The Second War for Armageddon is the second of three massive conflicts between the Imperium of Man and the Ork Warboss Ghazghkull Mag Uruk Thraka that took place between 941.M41 through 943.M41.

Ork WAAAGH! defeated and Ghazghkull forced to flee Armageddon's global infrastructure devastated

Third war for armageddon