These were the designs for the human faction. Not just your normal stand of the mill human steampunk ones, but an occult organisation with the talent for the dark arts. They are able to bring forth creatures from another plane to their aid. Though not all summons often go as planned.
Blurb for Magus faction from https://vanguard-exiles.com/
A shadowy organization, known only by their codename "Magus", little is known of this group of human diabolists.
Some say they were an occult order founded by the government to investigate new forms of warfare; others say they are a cult that worships some foul, unnamed horror from some other realm.
Whatever their background, all is known that their magic is dark and strange and the creatures they summon are not of this plane.