Question

Who was the leader of the American Expeditionary Force?

Answer 1

General John Pershing. President Wilson's possible first choice, Fredrick Funston died of a heart attack.

Explanation:

Interestingly did not end segregation even though he was a supporter of black soldiers in the Army, having spent much time with the 10th calvary. He had been called "Black Jack" and worse because of this association and other reasons.
https://en.wikipedia.org/wiki/John_J._Pershing