The Fire Wasp is a combat drone similar to a Servo-skull that is used by the forces of the Adeptus Astartes in boarding actions to venture ahead of assault parties and help them clear a path. The Fire Wasp has been used by the Space Marines since the time of the Great Crusade. The drone is sent in ahead of a boarding squad and is intended to trip enemy mines and other traps.
While the Fire Wasp is an extremely robust device, it is a poor combatant, and is not designed to directly engage enemy forces. Most standard patterns of the Fire Wasp are equipped with a built-in Flamer-weapon and a Searchlight device to aid in their mission.
- Imperial Armour Volume 9 - The Badab War, Part 1, pg. 154