- Eydolim Campaign (Unknown Date.M41) - The Foresworn were among the murderous alliance of Chaos Space Marines that served the Daemon Prince Kor Megron in assailing the world of Eydolim and other nearby worlds. This particular Chaos campaign was unusual, in that such overwhelming assaults and universal cooperation is normally the province of a Black Crusade. This speaks volumes of Kor Maegron's powers of being able to manipulate so many disparate Chaos Space Marine warbands to do his bidding. The hateful wrath of the Daemon Prince drew not only the Foresworn together, but also forged the great alliance between the disparate Chaos Space Marines and renegade bands. Indeed, as the fighting within Eydolim reached its zenith, it was Kor Megron who wrought the summoning of the daemonic host. All together there was more than 200 Chaos Space Marines from the Word Bearers present in the final assault on Eydolim. The Foresworn were the spear tip of the Chaos Space Marine assault, focusing their offensive against the main temple, while their fellow Word Bearers warband, the Sons of Damnation, carved a bloody path towards the heart of the Imperial lines.
- The Hell Feaster - The Hell Feaster is a crazed Chaos Dreadnought who serves in the Foresworn warband.
Like the Traitor Legion of which they were a part, the Word Bearers, the Foresworn's Power Armour was the same colour of spilt blood, a colour often called "Traitor's Red" or "Betrayer's Red," after the Word Bearers changed their colours from slate grey to red during the Horus Heresy. This colour was sometimes worn with black or silver trim. Heretical prayers are inscribed directly into the surface of the Foresworn's armour. Often times the Foresworn are also seen wearing devotional prayer sheets hanging from their armour's shoulder plates, the blasphemous words of the Book of Lorgar inscribed upon them.
This warband typically adopts the symbol of the Word Bearers Legion, the Latros Sacrum, a stylised representation of a roaring, horned daemon's head wreathed in flames, which represented all that the XVII Legion stood for, all that they believed in so deeply and all that they were willing to kill and die for.
- Warhammer 40,000: Rulebook (6th Edition), "The Warriors of Damnation," pp. 396-397