Photo Number 549

A long time ago Memorial Day was known as Decoration Day.  I still like to think of it as the day that the graves of soldiers are decorated.
I have know idea who this Soldier is.  He served in the First World War, or the Great War.  This is a Real Photo Postcard with no markings. 
 
Did he come back?  Did he live a long and happy life?  Did he have family?  The only thing we know for sure is that he fought for our freedom.
 
Thank you to the many soldiers in the past and in the present:)
Update from Al:
This soldier has the National Army emblem on his collar.  The National Army was the combined forces of old core of the regular United States Army the Army National Guard and all the draftees.  This group was formed in 1917 to fight in WWI.