Board Thread:Warhammer 40k General Discussion/@comment-8704612-20130425145556/@comment-7232811-20130428083743

To add to this (post heresy):

Emperor's Children: pink, black & purple armour, worshippers of Slaanesh, Primarch Fulgrim, make use of sonic weaponry, & are the ultimate sadists.

Iron Warriors: gunmetal grey armour, worshippers of Chaos undivided, Primarch Perturabo, are siege experts, & have a fierce rivalry with the Imperial Fists.

Night Lords: dark blue armour with brass trim, worshippers of Chaos undivided, Primarch Konrad Curze, good at terror tactics, & always pick on those that are weaker than they are.

World Eaters: red armour with brass trim, worshippers of Khorne, Primarch Angron, masters at close combat, & are little more than blood-slavering maniacs.

Death Guard:  armour has the colours associated with disease, worshippers of Nurgle, Primarch Mortarion, good at attrition warfare, & are rotting pus-bags infested with every disease known to man.

Thousand Sons: blue & yellow armour, worshippers of Tzeentch, Primarch Magnus the Red, good at ranged combat & sorcery, & almost all of them are merely dust inside their armour, with only their souls remaining, rendering them lifeless automatons.

Black Legion: black armour with gold trim, worshippers of Chaos undivided, Primarch Horus, make use of shock tactics, & were formerly known as the Sons of Horus, & before that the Luna Wolves.

Word Bearers: red armour with silver trim, worshippers of Chaos undivided, Primarch Lorgar, make strong use of summoned daemons & chaos cults, & are the ultimate religious zealots.

Alpha Legion: blue & green armour (often with scales), worshippers of Chaos undivided, Primarch Alpharius (actually a twin Primarch to his brother Omegon), use sneaky & unscrupulous battle tactics to win their wars, & might still be loyal to the Emperor.