Has Britain Learned the Wrong Lessons from World War 2?

British soldier on the beaches of Normandy on D-Day.
British soldiers on the beaches of Normandy on D-Day (public domain)

Britain was forever changed by the Second World War, though not as much as some countries like the defeated, annihilated Germany and Japan, nor the new superpowers that emerged from World War 2; a devastated Russia with its millions upon millions of dead or the United States which became an economic powerhouse and turned the 20th century into an American one.