Centurion - Stepping Into A Warsuit: The Centurion is an enormous, battle-ready exoskeleton, a vehicle to enable the vengeful brutality of the Adeptus Astartes to gain access to hitherto unreachable places. A Space Marine pilots each one and the Centurion warsuit communes with the Machine Spirit (artificial intelligence) of his Power Armour. The Centurion stands taller than a Terminator and possesses all the resilience and firepower of a tank.Woe betide any citadel that bars its gates to a warrior so armed. The warsuit's construction is based on thick plates of ceramite, each one blessed with the Litany of Ritual Bonding by a Tech-priest before being fixed in place by crane-armed Servitors possessed by sanctified datahosts. With such protection Centurions can endure ferocious attacks, while the Space Marine inside can concentrate on punching through the bulkheads of hive city walls, or incinerating rows of armoured xenos.The Centurion designs permit a skilled Techmarine or Servitor to access the various pistons and cables within and apply any sacred unguents. For a Space Marine to step inside the warsuit from the rear, the top section of the warsuit must be lifted upwards. At this stage he may exchange helmets for a more appropriate Centurion helmet, to better augment his targeting or monitor the feedback of the Siege Drills, or simply rely upon his own enhanced instincts.It is often the newer pilots who opt to go into battle with a helmet so that they may override the Machine Spirit and gain better control over it from within a sealed constituent. Once they have tamed the violent tendencies of the warsuit, then they may trust it more, extending their awareness more completely to the warzone around them.Once inside, there are numerous harnesses to strap the Battle-Brother in place. These enable him to weather even the concussion caused by direct hits from firepower designed to rupture tank hulls. The pilot is connected by several power cables so that the Centurion suit directly interfaces with his own Power Armour; as this link is activated, his body pounds momentarily with newly established energies, enough to overwhelm an un-enhanced human.At first, new pilots must enter a trance-like state purely to gain control over the Machine Spirit, and a mental duel is fought even before the suit is even activated. Some Machine Spirits will not be tamed by the Space Marine, and a handful even cause burnout, frying the minds of their pilots.Such overly-powerful Centurion suits are quickly ushered away by Tech-priests for "decommissioning." Once connected into the warsuit, the accepted battle position is for a Space Marine's hands to be crossed against the front of his chest, behind the torso-plate and the suit's secondary weapons, for he controls the vehicle with his thoughts.It is worth noting that certain Chapters, such as the Iron Hands, have developed particular expertise when interfacing with their own vehicles, and are therefore more naturally inclined to use them in battle.In fact, such is the strength of their belief that all flesh is weak -- even that of a Space Marine -- that pilots from the Iron Hands tend to dwell within the warsuit longer than is strictly necessary. A number of their pilots are now permanently bonded within their warsuit and can never be removed without suffering a fatal neurological injury.