There is an interesting article here on the whole "good war" construct with an interesting counterpoint to Germany having fought the "bad war." BTW, my posting it here does not imply agreement with its thesis or argument.

The United States has become a militarized society in peacetime and supports a martial pride and attendant hyperpatriotism in its mainstream culture and ethos that is reminiscent of old Prussia. As the leader of the Western world, the U.S. has built the most powerful armed forces and destructive weapons systems the world has ever seen. During the Cold War the Americans spent up to 30 percent of its budget on the military. They established an awesome global base system that allows the U.S. to project its power swiftly and devastatingly when needed. It has fought long wars in Korea and Vietnam and intervened dozens of time around the world when it saw its national interests threatened.

This acceptance of a permanent peace-time military establishment and global power projection after World War II has much to do with the hard-won victories and the subsequent American memory regime of the "good war." Actually, the cultural production in the years after the war maintained an ambivalent and darker view of the war which had dehumanized so many of its young soldiers in the epic battles in the Pacific and in Europe. Norman Mailer's The Naked and the Dead and Joseph Heller's Catch-22 stand for this darker view.

But since the 1980s D-Day commemorations turned uncompromisingly patriotic and the cultural production celebratory of the "greatest generation" that lived through the Depression and rose to victory during World War II. Steven Spielberg's Saving Private Ryan and the ten-part TV series "Band of Brothers" signify a patriotic memory of World War II that celebrates the "good war." The late historian Stephen E. Ambrose has done more than anyone to enshrine this new view in his books and in the National D-Day Museum in New Orleans. In the words of historian Chad Barry "the good war thesis became a powerfully seductive and intoxicating view of an idealized past and a golden age."