Available to the Empire, these men follow the old art of ninjutsu from the days of the samurai. Silent, fast and deadly, ninja do not use guns or bombs, but use their new-generation polysteel katanas to cut down their foes ....... and then vanish back to whence they came. Rumour has it that the Empire employs these masters of subterfuge primarily as defensive units to defend installations vital to the Empire and to terrorise recalcitrant vassals into compliance.