Apparently, there has never been a national memorial to the World War 1 dead. It may have something to do with the bonus marchers and what happened in DC in 1932...
Bonus_Army
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At 4:45 p.m. ( 7/28/1932 ), commanded by Gen. Douglas MacArthur, the 12th Infantry Regiment, Fort Howard, Maryland, and the 3rd Cavalry Regiment, supported by six battle tanks commanded by Maj. George S. Patton, Fort Myer, Virginia, formed in Pennsylvania Avenue while thousands of Civil Service employees left work to line the street and watch the U.S. Army attack its own veterans. The Bonus Marchers, believing the display was in their honour, cheered the troops until Maj. Patton charged the cavalry against them — an action which prompted the Civil Service employee spectators to yell, "Shame! Shame!"
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There is a doughboy statue in Overton Park in Memphis, as a memorial to the fallen of WW1. I am not aware of others in cities of the same size or larger, but I am sure there are some.
http://www.memphisflyer.com/AskVance...-vicious-beast
Larry