Editing Sky Serpents (section)

===Armory===
The Legion's tactical doctrine of swift encirclement and mobile warfare means that mobility is highly valued. To this end, nearly every squad is assigned a dedicated transport of some sort, with these vehicles being preferred over jump packs or bikes. Most commonly, this is the rhino. (When the Razorback becomes available, Xun falls in love with it. Volkite razorbacks.... mmmm...)
However, the legion is also well stocked with Land Raiders and Spartan Assault tanks, preferring the latter for deployment of 20 man despoiler squads.
Another common means of transportation for 20 man despoiler squads is the Storm Eagle.

Squads are deployed in notional units of 20, the number of completeness in Tepectitlani culture. When deployed by rhinos or other such transports, the two squads of ten then support each other and fight as one.

The chapter is known for its deployment of armor, preferring Malcadors, Sicarans and Predators over the much slower legion artillery. When Vindicators are deployed, they are usually fielded in a stripped down configuration to allow for greater speed. (Like how Alpha Legion fields them in Book 6)
To augment this arsenal, the legion also makes use of aircraft such as the Fire Raptor.

In the legion's thought, the airborne infantry and weaponry are the Fangs and Fire of the Serpent, to snap out of nowhere and deliver a killing blow. (The teleportarium deployed terminators also fall into this category) The tanks and mounted infantry are the Coils and Claws of the Serpent, confining and disembowling the enemy.

The Legion shows a marked fondness for Volkite weaponry, and devotes a great deal of effort to maintaining and producing the otherwise arcane weapons. This is because the legion sees Volkite weaponry as an idea solution to the problem of how to deal with foes with extensive numerical superiority. Because the legion's deployment is mobile, it runs the risk of being cut off and unable to take a defensive posture. Volkite weaponry has the range and destructive capacity to hold off a foe while the legionaries dig in.

The exception to this general mode of deployment is seen in specialized linebreaker formations, which are generally held in reserve until the killing blow is to be struck. This is where the legion fields its Mastadons and Typhons and Dreadnaughts, as well as terminators and breaching units.

Psykers are relatively common in the legion, and are deployed as widely as possible. I'll type up a bit more later, but basically they do scrying on the enemy and communicate with one another to enhance cohesion in addition to killing yaks at 500 yards with MIND BULLETS. So how the Storm Seers of the White Scars are Chaplains + Librarians, these guys are Vigilator/Master of Signals + Librarians.

Basically, if we were to write up crunch, they'd have a unique consul type for them--still working on the name.
They might even have a rule like the Word Bearers Burning Lore or be able to upgrade a Praetor to a psyker for XX points like an Iron Warriors War Smith.

They'd probably have a rule to upgrade a tac squad to volkite for XXX points as well. And probably their LA rules would include scout. Really, it would probably look a lot like the White Scars with a provision that their compulsory troops must have DCs.

Likely in this universe, it's the Sky Serpents that invent the Damocles, which will have to get a cool Mesoamerican or Chinese sounding name.

While I'm at it, I'm thinking there's an elite terminator guard, that I'm oh-so-cleverly thinking of calling Jaguar Warriors. I'm imagining that the legion as a whole makes widespread use of glaives and macuahuitls, and these Jaguar Warriors would have a volkite in one hand and a macuahuitl in the other, and probably rad grenades/rad missile launchers, since these guys are for breaching and storming the gap.

I also imagine that they make widespread use of modified destroyer squads, since their weapons provide a means of compensating when outnumbered. They'd seldom use phosphex, but make use of rad weapons and maybe flamers or better, those mechanicum rad cleansers.

In a similar vein, they'd probably be fond of Lightning guns, but that's mostly for the visual and symbolic effect, rather than any strategic benefit.

So I'm thinking that they're distinct from the Angels of Light in that the Angels do much more jet-bikes and straightforwards assaults, from the Behemoth Guard in that they are heavy armor and nasty weapons straight to the face partying like it's 1916, from the Second Sons in that they aren't nearly so "dirty" with their weaponry, from the Warhawks in that their air cav is part of a two pronged approach with their ground forces and the focus for the Sky Serpents is 'confine the enemy with speed and confusion and then hit them like a ton of bricks' rather than 'ambush from ten sides', the effect is similar, but for the Sky Serpents, confusion is the weapon and speed is a good way to achieve that, and from the Fists of Mars by not being cyborgs, but I don't know enough about what they fight like to really go further.