Flak Armour
Flak Armour is a light and relatively primitive form of body armour used by the military forces of the Holy Empire. It usually consists solely of a breastplate, shoulder pauldrons, knee plates, greaves and helmet and is most commonly used in Imperial Guard Regiments. It provides little protection against heavy weapons but resembles a modern day bulletproof vest in its protective ability. Its primary function is to deflect shrapnel or "flak". Flak Armour is the standard combat armour for the Imperial Guard and Planetary Defence Forces. It is very cheap, is the standard armor of the empire.
Power Armour
Power Armour is an advanced form of combat armour, worn primarily by the Space Marines. It is a completely enclosed suit of combat armour composed of thick ceramite plates that possesses a full suite of life-support functions for operation in hostile environments, an automated medicae system to provide some level of first aid to a wounded wearer and a highly advanced and fully integrated tactical targeting and threat analysis system. The armour would be heavy and cumbersome to wear but for the electrically motivated fibre bundles within the armour that replicates the wearer's movement and enhances his strength beyond its already considerable superhuman baseline (for Space Marines). Whilst Power Armour is most commonly associated with the Space Marines and many Inquisitors also use powered armour of one sort or another. Typically, however, these armours may not contain the same strength-enhancing properties or life-support functions of Space Marine Power Armour, nor do they always provide the same level of protection. The power armour is made only in specialized forge worlds, since they need special manufacturing processes.
