Which rivalry were involved in the chant referring to the United Kingdom's Victories of the First and Second World War?
Two World Wars and One World Cup: "Two World Wars and One World Cup" is a football song sung by supporters of the England national football team to the tune of "Camptown Races" as part of the England–Germany football rivalry. 1966 FIFA World Cup Final:  The match was played by England and West Germany on 30 July 1966 at Wembley Stadium in London, and had an attendance of 96,924.
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