Warriors have too often been treated as disposable material to be expended in war. If the U.S. had been more isolationist, more nationalist, which is the way the Founders envisioned America, the things that triggered US military action might not have sent us to war. The lives lost in Vietnam, Iraq, and Afghanistan probably wouldn't have happened. Pat Buchanan even thinks that both world wars were unnecessary; if not for the blunders of Winston Churchill the horrors of two world wars and the Holocaust might have been largely avoided. (“Churchill, Hitler, and the Unnecessary War : How Britain Lost Its Empire and the West Lost the World”)
It sounds counter-intuitive but if the military had their choice, and if priests, philosophers and politicians were less involved in wars, there might be powerful armies but fewer wars.