Catholicgauze notes that the sacrifices of the soldiers in the Great War were depressingly wonderful. With the exception of Americans, who ended the fighting, the Europeans fought to save their empires and they ended by destroying their continent.
While by many measures the twentieth century was the most peaceful and progressive in all of human history, it nonetheless was one of great lost opportunities. The political-economic-financial-military union of the EU and NATO has brought peace to Europe, and the rise of China and India — combined with the continued strength of the United States — may bring peace to the world as well.
To all veterans, thank you.