When Call of Duty: Warzone kicked off its integration with Call of Duty: Black Ops Cold War, it did so by introducing a new miniature map to the battle royale in the form of Rebirth Island. Rebirth Island has been a mainstay in Call of Duty: Warzone ever since, giving fans of the game the chance to battle it out in smaller-scale, action-packed conflicts separate from the larger BR maps like Verdansk and Caldera.