5000 year War

The 5000 Year war began when Matt Final Orion gave Shaggy his Cosmic Form for the sole purpose of destroying the abyss. The Battle lasted over 4600 years before the defeat of the allies.

Planning
Shaggy new that if he was going to stand any chance of winning he would need help. He walked around the entire Gigaverse for like 200 years, convincing army's to aid in the assault. After that Shaggy and generals from each army devised a plan so fucking crazy that it like could actually have worked.

The plan involved the Armys going under the abyss and flipping it upside down. The Theory was that when they did this gravity would get all fucked up and like the abyss would be all fucked up.Really they just assumed the outcome would be bad for the abyss.

The Flipping
On 3465 (Normal World time) Almost all of the allied forces stealthed their way under the abyss