Vanguard Space Marine - Role: Elite killers, saboteurs and terror troops who spread fear and ruin throughout the enemy's domain -- these are the Vanguard Space Marines, the first into battle and the last sight their enemies will ever see.Precision and ruthless efficiency are the watchwords of the Vanguard Space Marines, and the silence of death is all that they leave in their wake. Performing duties ahead of the main battle line, these forward operatives sow discord and panic throughout the enemy force.Key personnel are assassinated in sudden, devastatingly accurate salvoes of Bolter fire, communications outposts obliterated with macro-explosive charges. As the enemy reels, the Vanguard Space Marines slip away into the shadows, already seeking their next kill.Vanguard Space Marines are reconnaissance and infiltration experts, equipped to operate alone in enemy territory for extended periods of time, and intensively trained in shadow warfare tactics and sabotage techniques. Vanguard strike forces are tasked with achieving full spectrum superiority over the enemy.Every facet of the opposition's war machine must be dismantled, from supply routes and infrastructure to communications and logistics. Morale must be utterly sapped through non- stop harassment by terror troops and precision sabotage.The ultimate goal of this relentless campaign is to leave the foe crippled and helpless before the advance of the main Space Marine battle line. Should they need to engage the enemy head-on, however, Vanguard formations are perfectly capable of doing so -- they are warriors of the Adeptus Astartes after all, armed and equipped with some of the deadliest wargear available to the Imperium.No matter their current squad role, all Primaris Space Marines are trained and indoctrinated in Vanguard tactics, able to don patterns of Mark X Power Armour unique to the reconnaissance detachments as and when they are called upon. In addition, during their time in a Chapter's Scout Company, all Space Marines are fully trained in the use of Vanguard armour variants and associated wargear, in preparation for potential deployment behind enemy lines.Battle-Brothers from a Chapter's Reserve Companies may be temporarily seconded to the foremost Battle Companies as Vanguard Space Marines, taking on the colours and markings of their new company for the duration of their service.In accordance with those recent amendments to the Codex Astartes, the 10th Company of each Chapter should maintain a permanent complement of one hundred Vanguard Space Marines under the command of a Captain -- known as the Master of Reconnaissance -- and supported by two Lieutenants well-versed in reconnaissance-in-force and other special forces missions.This standing force consists of hard-bitten Veterans who have displayed particular aptitude for forward reconnaissance-in-force warfare over the course of countless operations. It is their responsibility to ensure that when the Chapter enters battle it does so equipped with all relevant strategic data gathered from their covertscouting missions.Even with this duty complete, the Vanguard Space Marines must stand ready at all time to reinforce or supplement the Battle Companies. Even those Chapters who are not Codex compliant and possess no dedicated Scout Company -- such as the Space Wolves or the Black Templars -- ensure that there is always a standing formation of Vanguard Battle-Brothers ready to carry out covert missions.