In 1975 the American science fiction author Joe Haldeman, himself just back from Vietnam, wrote a “future history” novel called The Forever War. Joe saw then how a standing military and long standing threat (or perceived threat) could change society. He was right, as this article from Miller-McCune Magazine so clearly delineates.
…the professional military has taken the public out of the mix, something noted at the highest levels of government. Speaking at Duke University in September, Secretary of Defense Robert … noted the disconnect: “Whatever their fond sentiments for men and women in uniform, for most Americans the wars [in Iraq and Afghanistan] remain an abstraction. A distant and unpleasant series of news items that does not affect them personally … warfare has become something for other people to do.”