The idea of a war so horrid that people stop warring altogether wasn't invented by Gundam Wing. It's been used in countless other settings.
If you really want to get into things, that arc of Gundam Wing was most likely inspired by Europe post-WW1. A great deal of the people from that time became pacifists, or at least incredibly reluctant to war again.
This was in fact a major factor in WW2, as the British and the French, the biggest european empires were incredibly tolerant of Germany's advances and and other acts that would of led to Germany being crushed 50 years beforehand. Even after they "declared war" on Germany, it was Germany that actually began the attack on them.
The only thing worse than an empty signature is one that has nothing at all to say. One that simply yammers on with little or no point; quietly, subtly draining away seconds of your life.
The worst are the ones that look like they have a point. Multiple paragraph monstrosities that you're sure will have some sort of satisfying conclusion. Some sort of goal, to show that your reading was not in vain.
It could be the even older idea of an universal empire, So war in erfworld would cease because there would be only one side.
While this is fascinating, and will probably arise in the plot, I do not think it will be what happens.
Why? Because this is something that, while extreme, can conceibvably happen within the rules of Erfworld. It doesn't change the world: it only changes the state it is in (maybe in a permanent way if there is no way to have part of a side rebel and form a new one, due to low loyalty or such). I expect Parson to be able to really break the rules and do so.
Just my 0.02 shmuckers anyway
Knowledge, logic, reason, and common sense serve better than a dozen rule books.
E. G. Gygax
Lawful member of the Hinjo fanclub
Treegrappler of the Durkon fanclub