"At the beginning of World War II, our army was a mixture of callow boys and and domesticated men. The older men were homesick for wives and children, the younger men felt themselves on the verge of an adventure they didn't quite understand. While most were unsure of themselves, their need for women was painfully apparent...There were plenty of lonely wives, too, and it soon became evident that a fair number of them were committed to the belief that continence was bad for women."
Read this post-war article that very clearly confirms that it was the Second World War that provided a powerful sexual charge to American society. A 1946 study indicated that an unprecedented 60 percent of American brides were non-virgins when they stood at the alter that year: click here.