First Chaos War

The First Chaos War, also called the First Chaomachy or Chaoskampf, was a conflict between the combined forces of every pantheon on Earth and the forces of Chaos who desired to return the universe to it's primordial state of emptiness and start over.

The various pantheons fought concurrent battles independent of one another, without coordination. Similar to the unintentional cooperation of Camp Half-Blood and Camp Jupiter but on a much larger scale.

Yahweh also participated in this war, entering into the void to confront Chaos directly.