"'Waterloo was won,'" quoted Rackham, "'on the playing fields of Eton.'"
"What the hell does that mean?" asked Carn Carby. "You never even went to Eton."
"It was an analogy," said Rackham. "If you hadn't spent your entire childhood playing war games, you'd actually know something. You're all so uneducated."

Ender's Game series - Shadow of the Giant (2005)