The Helstorm Rocket Battery is an experimental artillery piece used by the Empire of Man as a means to shower the enemy with a hail of highly volatile rocket ammunitions. The Helstorm Rockets was first inspired by a particularly impressive display of fireworks in the city of Altdorf. Early prototypes that were made had infamously blew apart an entire floor of the Imperial School of Engineers but the soot-blackened Engineers persevered and succeeded in creating a deadly, if unpredictable, weaponry. The shrieking rockets fired by this bizarre machines can be wildly inaccurate and frequently target nothing more than the ground. However, when these rockets do land on its intended target, the results are devastating; entire regiments can be blown apart by a series of earth-shattering eruptions through the explosive impact of these rockets. After Count Boris Todbringer was almost hit by an errant barrage, they were dubbed "Helstorm" rockets after the colorful language used to reprimand the unfortunate crewmen.
- Warhammer Armies: The Empire (8th Edition) -- p. 49