From Halopedia, the Halo wiki
The Kradal conflicts, sometimes known collectively as the Kradal conflict, were a series of bloody Forerunner civil wars that took place in the galactic center at some point before the human-Forerunner war. Bitterness-of-the-Vanquished commanded Warrior-Servant forces during these conflicts, which saw the loss of countless warriors. The Z-130 Suppressor was first used during the Kradal conflicts. A stone monument was later erected in the memory of the conflicts.
List of appearances
- Halo 2: Anniversary, multiplayer map Warlord: Map description "This site pays homage to the Kradal conflict, a somber Forerunner civil war which saw the loss of countless warriors."
- Halo: Silentium, String 29
- Halo 4: The Essential Visual Guide, page 97
- Halo Waypoint, Canon Fodder - Cutting Room Lore (Retrieved on Jul 26, 2022) [archive]