All Vietnam become communist in 1954.No South-North Vietnam,no Vietcong,no War in 60s.John F. Kennedy is not killed in Dallas,and is reelect in 1964.In G.B. The National Service is not abolished untill late 60s.Young people as John Lennon,Paul Mccarthy,Mick Jagger go to the army and lost the moment,the occasion of theirs life.No Beatles,no Rolling Stones,no The Who.the most important British rockstars in 1965 are Cliff Richard ,and the Shadows (in USA "the king" is Elvis).In mid-late 60s nothing "British invasion",nothing controculture,nothing "Hippies",but nothing war in Vietnam too.