Aces HighBy: Bill Yenne Capturing the hearts of a beleaguered nation, the fighter pilots of World War II engaged in a kind of battle that became the stuff of legend. They cut through the sky in their P 38s to go one on one against the enemyand those who survived the deadly showdowns with enough courage and skill earned the right to be called aces. But two men in particular rose to become something more. They became icons of aerial combat, in a heroic rivalry