in their heyday, there were over 1,500 bandstands in the country, attracting crowds of over 10,000 in the case of the arboretum in lincoln. up until the beginning of the second world war most of london's parks held regular concerts

How would the previous sentence be correctly capitalized?
In their heyday, there were over 1,500 bandstands in the country, attracting crowds of over 10,000 in the case of the Arboretum in Lincoln. Up until the beginning of the Second World War most of London's parks held regular concerts