Reflections on the 4th

Why is it that we treat the 4th of July as a martial holiday? With everything there is about this country to celebrate -- our advances in science and technology, our arts in terms of both high and popular culture, our geography, our diversity -- why is it that we focus on the military? I understand that the country began with the Revolutionary War, but it equally well started with smart people reflecting on the writings of Enlightenment philosophers and thinking hard about the nature of governance. Why is it only the fighting that we prize and not all the other things that we as a nation have created or model that we would be justifiably proud of?