The greatest rivalry in sports

Army vs Navy. Sure it isn't getting the national recognition of a Big 12 title game or the SEC Championship. How can you ignore the dedication and not just during game day. This a rivalry in every aspect of life at these institutions. All sports large and small. Club sports, varsity sports, mens and womens. Sure everyone can tell me that Michigan/Ohio State is a huge rivalry and probably bigger or maybe Texas/Oklahoma, Oregon/Oregon State, Duke/NC(basketball obviously) and so on. But how many people that go to those schools know when the next game is in another sport other than football? The freshmen(plebes) are required to know the next Army Navy contest that is coming up. How many other schools have this game at a neutral location? Philadelphia has been the home to this tradition for most years and just adds to the tradition. Each school has a company that runs a "game" ball from their respective school to the field regardless of weather or time of night the ball keeps on running.