Human-Isu War

The first war was a fictional war between early Humans and Those Who Came Before. Much is unknown about the war, but it led to the First Civilization not seeing the signs of a pending apocalypse which led to the destruction of almost all of both races and much of the earth.

Causes

Seen in the truth video, Humans were being used as a work force (slaves) by the first civilization. They used the Pieces of Eden to bend the will of man and make them work, but the Half-breed Humans seemed to have developed an immunity towards the Pieces of Edens' effects, allowing two early Humans called "Adam and Eve" to escape the factory (more commonly known as the Garden of Eden) and bring with them a captured Piece of Eden. This most likely caused the war and also inspired the story of the Garden of Eden, with the first civilization being the creator, or "God", who threw them out. Templars use the other story as a cover up to control all of humanity.

The War

It seems that those who came before had better technology but the humans were many and built to survive in any conditions. This survival instinct may have been later known as evolution.

The war was cut short as the massive solar flare burnt the earth

Aftermath

Since the First Civilization, the only people who could save the earth, did not see the signs of the pending apocalypse, the earth and most of its inhabitants were burnt. The First Civilization lost most of them which resulted in the humans winning.

The blast could have caused the last great ice age which triggered mans fast evolution.