The bodies of many soldiers killed in World War I could not be identified. To honor them, the remains of one were brought to the U.S. Capitol to lie in state, and on Armistice Day 1921 they were ceremoniously buried in Arlington National Cemetery. The tomb bears the inscription "Here rests in honored glory an American soldier known but to God." Congress later directed that an "Unknown American" from subsequent wars - World War II, Korea and Vietnam - be similarly honored. Because of the development of DNA technology, the unknown soldier from the Vietnam War was recently exhumed and identified. There may never be another unknown soldier. http://www.arlingtoncemetery.net/unk-wwi.htm
