How many American deaths in world war 1?

The official figure is 116,708; however this does not include Americans who volunteered for service in other countries militaries prior to the US entry into the war.

Many Americans are known to have volunteered for servce the armies of France, Britain or Belgium, and some other countries. A few Americans of German birth or heritage enlisted and served in the German army as well. There are no accurate figures for these voluntary enlistments; as they were often done quietly and in many cases under false names, since this sort of this was discouraged by the neutral US government.