The Ra'zac War was a bloody conflict between the Dragon Riders and the Ra'zac and could possibly be described as genocide. The Ra'zac arrived in Alagaësia from an unknown land, thought to be that of humans (they seemingly followed them to Alagaësia). Ra'zac were naturally suited to hunting humans and loved the taste of their flesh. The Ra'zac wreaked havoc among humans. Finally the Dragon Riders stepped in to try to rid the world of these ruthless monsters. The Riders eventually succeeded in killing all but two of them before the Fall. An actual name for this conflict has never been given in the Cycle.