In 1808 Napoleon invaded Spain. His army enjoyed such overwhelming superiority that the Spanish army barely had an opportunity to fight. Being defeated but with most of its command structure intact, it took its men and materiel off to the hills and proceeded to fight a war that gave the word 'guerrilla' to the world.
The UK government intervened (self-interestedly of course) on the side of Spain against Boney.
The only history that is read in Washington is the kind that shows the Patriots beating off the Redcoats, and preferably the Disney version. European history is for wimps.