Editing Realm Guard and Mercenaries (section)

==The Howling Swarm==

A Slaaneshi warband operating within the Tempestus Gap. In a variation of normal Slaaneshi operating procedure, the Howling Swarm makes heavy use of cybernetic and genetic augmentation, trying to achieve heights and types of sensation impossible for unmodified humans. Skin-grafts with massively denser nerve endings, eyes that see magnetic fields, internal drug reservoirs, dozens of tentacles for arms, yard-long cyberdongs, every day brings some new atrocity against decency and sense. Many members of the warband are no longer even vaguely human.

As a result, they have close ties with the Dark Mechanicus, volunteering themselves as guinea pigs and fighting for Dark-Mech interests in exchange for new implants. The majority of the warband give praise to the Omnissiah alongside Slaanesh, and most even see them as the same entity, in the same way OU orthodoxy held that the Big E and the Big O were the same entity. After all, both seek the same goal- the transcendence of the limits of the human mind- and, for the Howling Swarm at least, the same methods.
Links with some more unscrupulous DEldar Haemonculi are also rumored, but not confirmed. 

In battle, the Howling Swarm tend to use sensory-overload weaponry. Hallucinogenic gases, mind-affecting magnetic beams, blinding lasers, seizure-inducing stroboscopes, eardrum- and mind-shattering sonic weaponry, and the simple overwhelming terror of their inhuman appearance, carefully sculpted for maximum psychological effect. Once incapacitated, the enemy force is collected for forcible induction, sacrifice, or sale as slaves. Against enemies hardened against these weapons, the Howling Swarm relies on its heavy augmentation to carry the day in close combat, backed up by swarms of lesser cultists/meat-shields. 

If these don't work either, they will generally retreat, muttering that they probably wouldn't have made good playthings anyway.