Ordo Explatorus

"The thickest hide is no defense, when the strike falls from within." - Anonymous

Ordo Explatorus is a sub-branch of Astra Inimicus, that is responsible from leading boarding actions and on higher scales the navigation of entire fleets of Artillery Ships. After returning from his brief pilgrimage to Earth that brought a wave of desperate reforms Emperor Lex specifically installed the former The Cult of Navigators, worshippers and aspirants of the Daemonic entity known as 'Watchman Nautir' as the leading initiative of Ordo Explatorus alongside a part of The Lexian Mechanicus.

This created a short-lived power conflict within the organization that ended with the taming and the assimilation of Mechanicus elements. They soon adapted scholarship into their culture and cultivated wisdom in their aspiring recruits which would go through extensive training and bodily modification to eventually become Path-Navigators: An amalgamation of occult Daemonic Magic with advanced Lexian surveillance and scanning technology, Ordo Explatorus soon proved themselves of utmost benefit to the Astra Inimicus and The Lexian Imperium with their adepts being utilized in most modern operations.

Path-Navigators
What could be considered the most extensive and versatile operatives of Ordo Explatorus, deployed through numerous legions of The Lexian Imperium. They function unlike the labourers and specialists of The Lexian Mechanicus, these infiltrators are modified from birth to posses a propensity for Psychic or Daemonic Phenomenon. These agents are experts at scaling obscurities and unveiling concealment, they are not only a node of observence, they also server as expert transporters. Being able to conjure up Lexian forces once they go through the enemy hull. A single Path-Navigator is a weakness that must be eliminated, for even with an arsenal of diverse modifications, they are susceptible to technology that leaves psykers unable to act, such as Null, and their bodies while prepared for the battlefield is not a bulwark and cannot regenerate from mortal wounds or grave blood loss. They must be carefully supported as the battle ensues and boarding action is deepened into the enemy's junctures.