King George's Folly is the nickname of a war in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was a war between the Kingdom of Acorn and the Overland, led by King George Acorn, which predates the Great War.
Not much is known about King George's Folly. What is know is that it was a brief but terrible war of untold violence which cost the lives of all the knights in the Kingdom of Acorn. In the aftermath, George was sanctioned by the court and stripped of his powers as king. The violence seen in King George Folly would remain unsurpassed throughout history as the worst until the Great War which occurred about seven generations later.